HTTP ERROR 500 when trying to access NextCloud

Nextcloud version (eg, 12.0.2): 13.0.4.0
Operating system and version (eg, Ubuntu 17.04): Ubuntu 16.04.4
Apache or nginx version (eg, Apache 2.4.25): 2.4.18
PHP version (eg, 7.1): PHP 7.2.7

The issue you are facing:

Is this the first time you’ve seen this error? (Y/N): Y

Steps to replicate it:

You can’t replicate it as it seems to be a linux issue. This page isn’t working

blacks.cloud.pinklama.studio is currently unable to handle this request.

HTTP ERROR 500

The output of your Nextcloud log in Admin > Logging:

I can not paste the log as I cant get on the Next Cloud

The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):

<?php
$CONFIG = array (
  'instanceid' => 'ID',
  'passwordsalt' => '53/cNYuZ4RBF+mXLY2tjW5J9CVK9Vl',
  'secret' => 'UEHX/JG5YWkQEC9KYPiW1+d4YlnrVAHETW7O4IgJb84L8Uak',
  'trusted_domains' => 
  array (
    0 => 'IP',
    1 => 'URL',
  ),
  'datadirectory' => '/var/www/html/data',
  'overwrite.cli.url' => 'IP',
  'dbtype' => 'mysql',
  'version' => '13.0.4.0',
  'dbname' => 'blackscloud',
  'dbhost' => 'localhost',
  'dbport' => '',
  'dbtableprefix' => 'oc_',
  'mysql.utf8mb4' => true,
  'dbuser' => 'oc_blacks',
  'dbpassword' => '',
  'installed' => true,
  'maintenance' => false,
  'mail_smtpmode' => 'smtp',
  'mail_smtpauthtype' => 'LOGIN',
  'mail_from_address' => 'cloud',
  'mail_domain' => 'email domain',
  'mail_smtpauth' => 1,
  'mail_smtphost' => 'HOST',
  'mail_smtpport' => '465',
  'mail_smtpname' => 'username',
  'mail_smtppassword' => 'password',
  'mail_smtpsecure' => 'ssl',
  'theme' => 'blacks',
  'knowledgebaseenabled' => false,
  'htaccess.RewriteBase' => '/',
  'logtimezone' => 'Europe/London',
  'skeletondirectory' => '',
);

The output of your Apache/nginx/system log in /var/log/____:

I have alot of log files let me know which ones you need.

Most of the times 500 error are related to a missconfiguration:

the most commun, the missing dependency. Double check your system againt nextcloud dependency.

then, in order check your:

  • Rights permission : files, folders, users

  • PHP-Timeout : is your php conf correct. sometimes, more memory, more timout is needed.

  • htaccess : double check structure, coding of your [.htaccess]

  • syntax and/or options for scripts CGI/Perl : names, locations, options settings

  • PHP-Memory-Limit be sure you have everything ok.

  • Database check users, access, rights

first step, does your apache server working fine ??

then php test using some test files like

/test.php
<?php phpinfo(); ?>

or
/opcachetest.php

<?php
define('THOUSAND_SEPARATOR',true);
if (!extension_loaded('Zend OPcache')) {
    echo '<div style="background-color: #F2DEDE; color: #B94A48; padding: 1em;">You do not have the 
 Zend OPcache extension loaded, sample data is being shown instead.</div>';
    require 'data-sample.php';
}
class OpCacheDataModel
{
    private $_configuration;
    private $_status;
    private $_d3Scripts = array();
    public function __construct()
    {
        $this->_configuration = opcache_get_configuration();
        $this->_status = opcache_get_status();
    }
    public function getPageTitle()
    {
        return 'PHP ' . phpversion() . " with OpCache {$this->_configuration['version']['version']}";
    }
    public function getStatusDataRows()
    {
        $rows = array();
        foreach ($this->_status as $key => $value) {
            if ($key === 'scripts') {
                continue;
            }
            if (is_array($value)) {
                foreach ($value as $k => $v) {
                    if ($v === false) {
                        $value = 'false';
                    }
                    if ($v === true) {
                        $value = 'true';
                    }
                    if ($k === 'used_memory' || $k === 'free_memory' || $k === 'wasted_memory') {
                        $v = $this->_size_for_humans(
                            $v
                        );
                    }
                    if ($k === 'current_wasted_percentage' || $k === 'opcache_hit_rate') {
                        $v = number_format(
                                $v,
                                2
                            ) . '%';
                    }
                    if ($k === 'blacklist_miss_ratio') {
                        $v = number_format($v, 2) . '%';
                    }
                    if ($k === 'start_time' || $k === 'last_restart_time') {
                        $v = ($v ? date(DATE_RFC822, $v) : 'never');
                    }
                    if (THOUSAND_SEPARATOR === true && is_int($v)) {
                        $v = number_format($v);
                    }
                    $rows[] = "<tr><th>$k</th><td>$v</td></tr>\n";
                }
                continue;
            }
            if ($value === false) {
                $value = 'false';
            }
            if ($value === true) {
                $value = 'true';
            }
            $rows[] = "<tr><th>$key</th><td>$value</td></tr>\n";
        }
        return implode("\n", $rows);
    }
    public function getConfigDataRows()
    {
        $rows = array();
        foreach ($this->_configuration['directives'] as $key => $value) {
            if ($value === false) {
                $value = 'false';
            }
            if ($value === true) {
                $value = 'true';
            }
            if ($key == 'opcache.memory_consumption') {
                $value = $this->_size_for_humans($value);
            }
            $rows[] = "<tr><th>$key</th><td>$value</td></tr>\n";
        }
        return implode("\n", $rows);
    }
    public function getScriptStatusRows()
    {
        foreach ($this->_status['scripts'] as $key => $data) {
            $dirs[dirname($key)][basename($key)] = $data;
            $this->_arrayPset($this->_d3Scripts, $key, array(
                'name' => basename($key),
                'size' => $data['memory_consumption'],
            ));
        }
        asort($dirs);
        $basename = '';
        while (true) {
            if (count($this->_d3Scripts) !=1) break;
            $basename .= DIRECTORY_SEPARATOR . key($this->_d3Scripts);
            $this->_d3Scripts = reset($this->_d3Scripts);
        }
        $this->_d3Scripts = $this->_processPartition($this->_d3Scripts, $basename);
        $id = 1;
        $rows = array();
        foreach ($dirs as $dir => $files) {
            $count = count($files);
            $file_plural = $count > 1 ? 's' : null;
            $m = 0;
            foreach ($files as $file => $data) {
                $m += $data["memory_consumption"];
            }
            $m = $this->_size_for_humans($m);
            if ($count > 1) {
                $rows[] = '<tr>';
                $rows[] = "<th class=\"clickable\" id=\"head-{$id}\" colspan=\"3\" onclick=\"toggleVisible('#head-{$id}', '#row-{$id}')\">{$dir} ({$count} file{$file_plural}, {$m})</th>";
                $rows[] = '</tr>';
            }
            foreach ($files as $file => $data) {
                $rows[] = "<tr id=\"row-{$id}\">";
                $rows[] = "<td>" . $this->_format_value($data["hits"]) . "</td>";
                $rows[] = "<td>" . $this->_size_for_humans($data["memory_consumption"]) . "</td>";
                $rows[] = $count > 1 ? "<td>{$file}</td>" : "<td>{$dir}/{$file}</td>";
                $rows[] = '</tr>';
            }
            ++$id;
        }
        return implode("\n", $rows);
    }
    public function getScriptStatusCount()
    {
        return count($this->_status["scripts"]);
    }
    public function getGraphDataSetJson()
    {
        $dataset = array();
        $dataset['memory'] = array(
            $this->_status['memory_usage']['used_memory'],
            $this->_status['memory_usage']['free_memory'],
            $this->_status['memory_usage']['wasted_memory'],
        );
        $dataset['keys'] = array(
            $this->_status['opcache_statistics']['num_cached_keys'],
            $this->_status['opcache_statistics']['max_cached_keys'] - $this->_status['opcache_statistics']['num_cached_keys'],
            0
        );
        $dataset['hits'] = array(
            $this->_status['opcache_statistics']['misses'],
            $this->_status['opcache_statistics']['hits'],
            0,
        );
        $dataset['restarts'] = array(
            $this->_status['opcache_statistics']['oom_restarts'],
            $this->_status['opcache_statistics']['manual_restarts'],
            $this->_status['opcache_statistics']['hash_restarts'],
        );
        if (THOUSAND_SEPARATOR === true) {
            $dataset['TSEP'] = 1;
        } else {
            $dataset['TSEP'] = 0;
        }
        return json_encode($dataset);
    }
    public function getHumanUsedMemory()
    {
        return $this->_size_for_humans($this->getUsedMemory());
    }
    public function getHumanFreeMemory()
    {
        return $this->_size_for_humans($this->getFreeMemory());
    }
    public function getHumanWastedMemory()
    {
        return $this->_size_for_humans($this->getWastedMemory());
    }
    public function getUsedMemory()
    {
        return $this->_status['memory_usage']['used_memory'];
    }
    public function getFreeMemory()
    {
        return $this->_status['memory_usage']['free_memory'];
    }
    public function getWastedMemory()
    {
        return $this->_status['memory_usage']['wasted_memory'];
    }
    public function getWastedMemoryPercentage()
    {
        return number_format($this->_status['memory_usage']['current_wasted_percentage'], 2);
    }
    public function getD3Scripts()
    {
        return $this->_d3Scripts;
    }
    private function _processPartition($value, $name = null)
    {
        if (array_key_exists('size', $value)) {
            return $value;
        }
        $array = array('name' => $name,'children' => array());
        foreach ($value as $k => $v) {
            $array['children'][] = $this->_processPartition($v, $k);
        }
        return $array;
    }
    private function _format_value($value)
    {
        if (THOUSAND_SEPARATOR === true) {
            return number_format($value);
        } else {
            return $value;
        }
    }
    private function _size_for_humans($bytes)
    {
        if ($bytes > 1048576) {
            return sprintf('%.2f&nbsp;MB', $bytes / 1048576);
        } else {
            if ($bytes > 1024) {
                return sprintf('%.2f&nbsp;kB', $bytes / 1024);
            } else {
                return sprintf('%d&nbsp;bytes', $bytes);
            }
        }
    }
    // Borrowed from Laravel
    private function _arrayPset(&$array, $key, $value)
    {
        if (is_null($key)) return $array = $value;
        $keys = explode(DIRECTORY_SEPARATOR, ltrim($key, DIRECTORY_SEPARATOR));
        while (count($keys) > 1) {
            $key = array_shift($keys);
            if ( ! isset($array[$key]) || ! is_array($array[$key])) {
                $array[$key] = array();
            }
            $array =& $array[$key];
        }
        $array[array_shift($keys)] = $value;
        return $array;
    }
}
$dataModel = new OpCacheDataModel();
?>
<!DOCTYPE html>
<meta charset="utf-8">
<html>
<head>
    <style>
        body {
            font-family: "Helvetica Neue",Helvetica,Arial,sans-serif;
            margin: 0;
            padding: 0;
        }
        #container {
            width: 1024px;
            margin: auto;
            position: relative;
        }
        h1 {
            padding: 10px 0;
        }
        table {
            border-collapse: collapse;
        }
        tbody tr:nth-child(even) {
            background-color: #eee;
        }
        p.capitalize {
            text-transform: capitalize;
        }
        .tabs {
            position: relative;
            float: left;
            width: 60%;
        }
        .tab {
            float: left;
        }
        .tab label {
            background: #eee;
            padding: 10px 12px;
            border: 1px solid #ccc;
            margin-left: -1px;
            position: relative;
            left: 1px;
        }
        .tab [type=radio] {
            display: none;
        }
        .tab th, .tab td {
            padding: 8px 12px;
        }
        .content {
            position: absolute;
            top: 28px;
            left: 0;
            background: white;
            border: 1px solid #ccc;
            height: 450px;
            width: 100%;
            overflow: auto;
        }
        .content table {
            width: 100%;
        }
        .content th, .tab:nth-child(3) td {
            text-align: left;
        }
        .content td {
            text-align: right;
        }
        .clickable {
            cursor: pointer;
        }
        [type=radio]:checked ~ label {
            background: white;
            border-bottom: 1px solid white;
            z-index: 2;
        }
        [type=radio]:checked ~ label ~ .content {
            z-index: 1;
        }
        #graph {
            float: right;
            width: 40%;
            position: relative;
        }
        #graph > form {
            position: absolute;
            right: 60px;
            top: -20px;
        }
        #graph > svg {
            position: absolute;
            top: 0;
            right: 0;
        }
        #stats {
            position: absolute;
            right: 125px;
            top: 145px;
        }
        #stats th, #stats td {
            padding: 6px 10px;
            font-size: 0.8em;
        }
        #partition {
            position: absolute;
            width: 100%;
            height: 100%;
            z-index: 10;
            top: 0;
            left: 0;
            background: #ddd;
            display: none;
        }
        #close-partition {
            display: none;
            position: absolute;
            z-index: 20;
            right: 15px;
            top: 15px;
            background: #f9373d;
            color: #fff;
            padding: 12px 15px;
        }
        #close-partition:hover {
            background: #D32F33;
            cursor: pointer;
        }
        #partition rect {
            stroke: #fff;
            fill: #aaa;
            fill-opacity: 1;
        }
        #partition rect.parent {
            cursor: pointer;
            fill: steelblue;
        }
        #partition text {
            pointer-events: none;
        }
        label {
            cursor: pointer;
        }
    </style>
    <script src="//cdnjs.cloudflare.com/ajax/libs/d3/3.0.1/d3.v3.min.js"></script>
    <script src="//cdnjs.cloudflare.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
    <script>
        var hidden = {};
        function toggleVisible(head, row) {
            if (!hidden[row]) {
                d3.selectAll(row).transition().style('display', 'none');
                hidden[row] = true;
                d3.select(head).transition().style('color', '#ccc');
            } else {
                d3.selectAll(row).transition().style('display');
                hidden[row] = false;
                d3.select(head).transition().style('color', '#000');
            }
        }
    </script>
    <title><?php echo $dataModel->getPageTitle(); ?></title>
</head>

<body>
    <div id="container">
        <h1><?php echo $dataModel->getPageTitle(); ?></h1>

        <div class="tabs">

            <div class="tab">
                <input type="radio" id="tab-status" name="tab-group-1" checked>
                <label for="tab-status">Status</label>
                <div class="content">
                    <table>
                        <?php echo $dataModel->getStatusDataRows(); ?>
                    </table>
                </div>
            </div>

            <div class="tab">
                <input type="radio" id="tab-config" name="tab-group-1">
                <label for="tab-config">Configuration</label>
                <div class="content">
                    <table>
                        <?php echo $dataModel->getConfigDataRows(); ?>
                    </table>
                </div>
            </div>

            <div class="tab">
                <input type="radio" id="tab-scripts" name="tab-group-1">
                <label for="tab-scripts">Scripts (<?php echo $dataModel->getScriptStatusCount(); ?>)</label>
                <div class="content">
                    <table style="font-size:0.8em;">
                        <tr>
                            <th width="10%">Hits</th>
                            <th width="20%">Memory</th>
                            <th width="70%">Path</th>
                        </tr>
                        <?php echo $dataModel->getScriptStatusRows(); ?>
                    </table>
                </div>
            </div>

            <div class="tab">
                <input type="radio" id="tab-visualise" name="tab-group-1">
                <label for="tab-visualise">Visualise Partition</label>
                <div class="content"></div>
            </div>

        </div>

        <div id="graph">
            <form>
                <label><input type="radio" name="dataset" value="memory" checked> Memory</label>
                <label><input type="radio" name="dataset" value="keys"> Keys</label>
                <label><input type="radio" name="dataset" value="hits"> Hits</label>
                <label><input type="radio" name="dataset" value="restarts"> Restarts</label>
            </form>

            <div id="stats"></div>
        </div>
    </div>

    <div id="close-partition">&#10006; Close Visualisation</div>
    <div id="partition"></div>

    <script>
        var dataset = <?php echo $dataModel->getGraphDataSetJson(); ?>;
        var width = 400,
            height = 400,
            radius = Math.min(width, height) / 2,
            colours = ['#B41F1F', '#1FB437', '#ff7f0e'];
        d3.scale.customColours = function() {
            return d3.scale.ordinal().range(colours);
        };
        var colour = d3.scale.customColours();
        var pie = d3.layout.pie().sort(null);
        var arc = d3.svg.arc().innerRadius(radius - 20).outerRadius(radius - 50);
        var svg = d3.select("#graph").append("svg")
                    .attr("width", width)
                    .attr("height", height)
                    .append("g")
                    .attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");
        var path = svg.selectAll("path")
                      .data(pie(dataset.memory))
                      .enter().append("path")
                      .attr("fill", function(d, i) { return colour(i); })
                      .attr("d", arc)
                      .each(function(d) { this._current = d; }); // store the initial values
        d3.selectAll("input").on("change", change);
        set_text("memory");
        function set_text(t) {
            if (t === "memory") {
                d3.select("#stats").html(
                    "<table><tr><th style='background:#B41F1F;'>Used</th><td><?php echo $dataModel->getHumanUsedMemory()?></td></tr>"+
                    "<tr><th style='background:#1FB437;'>Free</th><td><?php echo $dataModel->getHumanFreeMemory()?></td></tr>"+
                    "<tr><th style='background:#ff7f0e;' rowspan=\"2\">Wasted</th><td><?php echo $dataModel->getHumanWastedMemory()?></td></tr>"+
                    "<tr><td><?php echo $dataModel->getWastedMemoryPercentage()?>%</td></tr></table>"
                );
            } else if (t === "keys") {
                d3.select("#stats").html(
                    "<table><tr><th style='background:#B41F1F;'>Cached keys</th><td>"+format_value(dataset[t][0])+"</td></tr>"+
                    "<tr><th style='background:#1FB437;'>Free Keys</th><td>"+format_value(dataset[t][1])+"</td></tr></table>"
                );
            } else if (t === "hits") {
                d3.select("#stats").html(
                    "<table><tr><th style='background:#B41F1F;'>Misses</th><td>"+format_value(dataset[t][0])+"</td></tr>"+
                    "<tr><th style='background:#1FB437;'>Cache Hits</th><td>"+format_value(dataset[t][1])+"</td></tr></table>"
                );
            } else if (t === "restarts") {
                d3.select("#stats").html(
                    "<table><tr><th style='background:#B41F1F;'>Memory</th><td>"+dataset[t][0]+"</td></tr>"+
                    "<tr><th style='background:#1FB437;'>Manual</th><td>"+dataset[t][1]+"</td></tr>"+
                    "<tr><th style='background:#ff7f0e;'>Keys</th><td>"+dataset[t][2]+"</td></tr></table>"
                );
            }
        }
        function change() {
            // Filter out any zero values to see if there is anything left
            var remove_zero_values = dataset[this.value].filter(function(value) {
                return value > 0;
            });
            // Skip if the value is undefined for some reason
            if (typeof dataset[this.value] !== 'undefined' && remove_zero_values.length > 0) {
                $('#graph').find('> svg').show();
                path = path.data(pie(dataset[this.value])); // update the data
                path.transition().duration(750).attrTween("d", arcTween); // redraw the arcs
            // Hide the graph if we can't draw it correctly, not ideal but this works
            } else {
                $('#graph').find('> svg').hide();
            }
            set_text(this.value);
        }
        function arcTween(a) {
            var i = d3.interpolate(this._current, a);
            this._current = i(0);
            return function(t) {
                return arc(i(t));
            };
        }
        function size_for_humans(bytes) {
            if (bytes > 1048576) {
                return (bytes/1048576).toFixed(2) + ' MB';
            } else if (bytes > 1024) {
                return (bytes/1024).toFixed(2) + ' KB';
            } else return bytes + ' bytes';
        }
        function format_value(value) {
            if (dataset["TSEP"] == 1) {
                return value.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",");
            } else {
                return value;
            }
        }
        var w = window.innerWidth,
            h = window.innerHeight,
            x = d3.scale.linear().range([0, w]),
            y = d3.scale.linear().range([0, h]);
        var vis = d3.select("#partition")
                    .style("width", w + "px")
                    .style("height", h + "px")
                    .append("svg:svg")
                    .attr("width", w)
                    .attr("height", h);
        var partition = d3.layout.partition()
                .value(function(d) { return d.size; });
        root = JSON.parse('<?php echo json_encode($dataModel->getD3Scripts()); ?>');
        var g = vis.selectAll("g")
                   .data(partition.nodes(root))
                   .enter().append("svg:g")
                   .attr("transform", function(d) { return "translate(" + x(d.y) + "," + y(d.x) + ")"; })
                   .on("click", click);
        var kx = w / root.dx,
                ky = h / 1;
        g.append("svg:rect")
         .attr("width", root.dy * kx)
         .attr("height", function(d) { return d.dx * ky; })
         .attr("class", function(d) { return d.children ? "parent" : "child"; });
        g.append("svg:text")
         .attr("transform", transform)
         .attr("dy", ".35em")
         .style("opacity", function(d) { return d.dx * ky > 12 ? 1 : 0; })
         .text(function(d) { return d.name; })
        d3.select(window)
          .on("click", function() { click(root); })
        function click(d) {
            if (!d.children) return;
            kx = (d.y ? w - 40 : w) / (1 - d.y);
            ky = h / d.dx;
            x.domain([d.y, 1]).range([d.y ? 40 : 0, w]);
            y.domain([d.x, d.x + d.dx]);
            var t = g.transition()
                     .duration(d3.event.altKey ? 7500 : 750)
                     .attr("transform", function(d) { return "translate(" + x(d.y) + "," + y(d.x) + ")"; });
            t.select("rect")
             .attr("width", d.dy * kx)
             .attr("height", function(d) { return d.dx * ky; });
            t.select("text")
             .attr("transform", transform)
             .style("opacity", function(d) { return d.dx * ky > 12 ? 1 : 0; });
            d3.event.stopPropagation();
        }
        function transform(d) {
            return "translate(8," + d.dx * ky / 2 + ")";
        }
        $(document).ready(function() {
            function handleVisualisationToggle(close) {
                $('#partition, #close-partition').fadeToggle();
                // Is the visualisation being closed? If so show the status tab again
                if (close) {
                    $('#tab-visualise').removeAttr('checked');
                    $('#tab-status').trigger('click');
                }
            }
            $('label[for="tab-visualise"], #close-partition').on('click', function() {
                handleVisualisationToggle(($(this).attr('id') === 'close-partition'));
            });
            $(document).keyup(function(e) {
                if (e.keyCode == 27) handleVisualisationToggle(true);
            });
        });
    </script>
</body>
</html>

Hi @stratege1401,

Thanks for replying quickly. I have done all the tests but still unable to get to Next Cloud any other suggestions?

if i understand right, you are able to browse to your serveur, you have all dependencies install, no php missconfig, a mysql or a database up and running … and still get a http 500 error ?

Hi Stranege,

Seemed to have fixed it when I reset my default configurations files and restarted I may of have a random charcater in there some how.

Thanks,
Adam

iTYPING WHILE YOU ANSWERED

to be sure you have a working lamps server, do a
apt install lamp-server^
The use of ^ (caret) in the package name is important. It suggests that the installed package is a ‘meta-package’, meaning a number of programs that are usually installed together.

the php dependency and a little bit more:
apt install php-zip php-dompdf php-xml php-mbstring php-gd php-curl unzip nano ccze glances

MAYBE yor 500 come from this step:
enabling a few packs for apache
a2enmod rewrite headers env dir mime

Check all the above first !!!

if you need more help running throught ssl for https, or APCu and Redis install, or else let do the above fisrt

i am thinking of writing my install homebrew sometimes …

1 Like

Hello,
when i try to upgrade to v17.*
after finished show up 500 error
so use ssh to check the problem:

sudo -u www-data php occ check

that show the upgrade not finished so then

sudo -u www-data php occ upgrade

Hope this help
Best Regards

2 Likes

This solution worked perfectly for me.

So far, using the web interface is only good for minor checks, config, and viewing/changing filenames, directories, etc. But actually executing backups, upgrades, and other things of this nature, you should go with the command line execute commands as www-data and things run a lot smoother. I love the idea of the web interface, but the stability is not all the way there yet (at least not in my instance).

Thanks so much @zerone for the simple yet effective solution to this internal error

Thanks mate, after upgrading to php 7.3 I had some libs missing.

Welcome,
for this reason there is community :wink:

thanks. this worked for me.