Internal Server Error on NextcloudPI

After installing NextcloudPI on my RPI3 everything seemed to work ok, be it a bit slow.
I even setup SSL without any hassles. It is running on my home network, behind two routers with port forwarding on. And as said: it worked fine by going to my.domain.com and using the internal IP. Now neither works.

After an our or so I got an error, and I can now only login to the admin interface. No longer to Nextcloud user part. The error I get is:


Internal Server Error
The server encountered an internal error and was unable to complete your request.
Please contact the server administrator if this error reappears multiple times, please include the technical details below in your report.
More details can be found in the server log.

Technical details
Remote Address: xx.xx.xx.xx
Request ID: reallylongid

System info:


Gathering information…

NextCloudPi version  v0.44.1
NextCloudPi image    NextCloudPi_12-04-17
distribution         Raspbian GNU/Linux 9 \n \l
automount            yes
USB devices          sda 
datadir              /media/Seagate4tb/NCP/
data in SD           no
data filesystem      ext2/ext3
data disk usage      2.7T/3.6T
rootfs usage         1.8G/15G
Nextcloud check      ok
Nextcloud version    12.0.4.3
HTTPD service        up
PHP service          up
MariaDB service      up
Redis service        up
Postfix service      up
internet check       ok
port check 80        open
port check 443       open
IP                   192.168.1.101
gateway              192.168.1.1
interface            eth0
certificates         mydomain.com
certs due            82 days 
NAT loopback         no
uptime               7days

You should enable dnsmasq to use your domain inside home


I would love to give you more logs, but I don’t know where to find them. If you tell me what logs you need and where to find them to provide assistance please let me know :slight_smile:

everything seems fine, if you issue

sudo ncp-report

you will get more logs that you can paste here

<–! Paste this in GitHub report -->

NextCloudPi diagnostics

NextCloudPi version  v0.44.1
NextCloudPi image    NextCloudPi_12-04-17
distribution         Raspbian GNU/Linux 9 \n \l
automount            yes
USB devices          sda
datadir              /media/Seagate4tb/NCP/
data in SD           no
data filesystem      ext2/ext3
data disk usage      2.7T/3.6T
rootfs usage         1.7G/15G
Nextcloud check      ok
Nextcloud version    12.0.4.3
HTTPD service        up
PHP service          up
MariaDB service      up
Redis service        up
Postfix service      up
internet check       ok
port check 80        open
port check 443       open
IP                   192.168.1.101
gateway              192.168.1.1
interface            eth0
certificates         home.mecallie.com
certs due            82 days
NAT loopback         no
uptime               1:28

Nextcloud configuration

{
    "system": {
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": {
            "0": "localhost",
            "5": "nextcloudpi.local",
            "1": "192.168.1.101",
            "4": "home.mecallie.com",
            "2": "home.mecallie.com"
        },
        "datadirectory": "\/media\/Seagate4tb\/NCP\/",
        "overwrite.cli.url": "https:\/\/home.mecallie.com",
        "dbtype": "mysql",
        "version": "12.0.4.3",
        "dbname": "nextcloud",
        "dbhost": "localhost",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "instanceid": "ocs86rkb5syt",
        "memcache.local": "\\OC\\Memcache\\Redis",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "\/var\/run\/redis\/redis.sock",
            "port": 0,
            "timeout": 0,
            "password": "***REMOVED SENSITIVE VALUE***"
        },
        "mail_smtpmode": "php",
        "mail_smtpauthtype": "LOGIN",
        "mail_from_address": "admin",
        "mail_domain": "ownyourbits.com",
        "overwriteprotocol": "https",
        "maintenance": false,
        "logfile": "\/media\/Seagate4tb\/NCP\/\/nextcloud.log"
    }
}

HTTPd logs

[Sat Dec 30 18:59:27.001508 2017] [core:notice] [pid 713:tid 1992142848] AH00094: Command line: '/usr/sbin/apache2'
[Sat Dec 30 18:59:57.393124 2017] [mpm_event:notice] [pid 713:tid 1992142848] AH00493: SIGUSR1 received.  Doing graceful restart
[Sat Dec 30 18:59:57.463615 2017] [ssl:warn] [pid 713:tid 1992142848] AH01909: localhost:4443:0 server certificate does NOT include an ID which matches the server name
[Sat Dec 30 18:59:58.000923 2017] [mpm_event:notice] [pid 713:tid 1992142848] AH00489: Apache/2.4.25 (Raspbian) OpenSSL/1.0.2l configured -- resuming normal operations
[Sat Dec 30 18:59:58.001089 2017] [core:notice] [pid 713:tid 1992142848] AH00094: Command line: '/usr/sbin/apache2'
[Sat Dec 30 19:01:39.558483 2017] [authnz_external:error] [pid 30227:tid 1968493616] [client 192.168.1.24:64862] AuthExtern pwauth [/usr/sbin/pwauth]: Failed (1) for user ncp
[Sat Dec 30 19:01:39.558759 2017] [auth_basic:error] [pid 30227:tid 1968493616] [client 192.168.1.24:64862] AH01617: user ncp: authentication failure for "/wizard/": Password Mismatch
[Sat Dec 30 19:01:45.216169 2017] [authnz_external:error] [pid 30227:tid 1960105008] [client 192.168.1.24:64862] AuthExtern pwauth [/usr/sbin/pwauth]: Failed (1) for user ncp
[Sat Dec 30 19:01:45.216431 2017] [auth_basic:error] [pid 30227:tid 1960105008] [client 192.168.1.24:64862] AH01617: user ncp: authentication failure for "/wizard/": Password Mismatch
[Sat Dec 30 19:02:01.200300 2017] [authnz_external:error] [pid 30227:tid 1951716400] [client 192.168.1.24:64862] AuthExtern pwauth [/usr/sbin/pwauth]: Failed (1) for user ncp
[Sat Dec 30 19:02:01.630919 2017] [auth_basic:error] [pid 30227:tid 1951716400] [client 192.168.1.24:64862] AH01617: user ncp: authentication failure for "/wizard/": Password Mismatch
[Sat Dec 30 19:13:22.416041 2017] [proxy_fcgi:error] [pid 30227:tid 1918161968] [client 192.168.1.24:64862] AH01071: Got error 'PHP message: PHP Notice:  Undefined variable: params in /var/www/ncp-web/ncp-launcher.php on line 87\nPHP message: PHP Warning:  Invalid argument supplied for foreach() in /var/www/ncp-web/ncp-launcher.php on line 87\n'
[Sat Dec 30 19:16:21.685165 2017] [authz_host:error] [pid 30227:tid 1867830320] [client 192.168.1.24:64862] AH01753: access check of 'localhost' to /ncp-launcher.php failed, reason: unable to get the remote host name
[Sat Dec 30 19:19:46.011820 2017] [proxy_fcgi:error] [pid 30227:tid 1783944240] [client 192.168.1.24:64862] AH01067: Failed to read FastCGI header
[Sat Dec 30 19:19:46.019459 2017] [proxy_fcgi:error] [pid 30227:tid 1783944240] (104)Connection reset by peer: [client 192.168.1.24:64862] AH01075: Error dispatching request to :4443:
[Sat Dec 30 19:19:47.860915 2017] [mpm_event:notice] [pid 713:tid 1992142848] AH00491: caught SIGTERM, shutting down
[Sat Dec 30 19:20:08.376263 2017] [ssl:warn] [pid 484:tid 1992724480] AH01909: localhost:4443:0 server certificate does NOT include an ID which matches the server name
[Sat Dec 30 19:20:09.110019 2017] [ssl:warn] [pid 707:tid 1992724480] AH01909: localhost:4443:0 server certificate does NOT include an ID which matches the server name
[Sat Dec 30 19:20:10.005437 2017] [mpm_event:notice] [pid 707:tid 1992724480] AH00489: Apache/2.4.25 (Raspbian) OpenSSL/1.0.2l configured -- resuming normal operations
[Sat Dec 30 19:20:10.005795 2017] [core:notice] [pid 707:tid 1992724480] AH00094: Command line: '/usr/sbin/apache2'

Database logs

2017-12-30 19:19:48 1638728512 [Note] /usr/sbin/mysqld: Shutdown complete

2017-12-30 19:20:19 1988595712 [Note] InnoDB: Using mutexes to ref count buffer pool pages
2017-12-30 19:20:19 1988595712 [Note] InnoDB: The InnoDB memory heap is disabled
2017-12-30 19:20:19 1988595712 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2017-12-30 19:20:19 1988595712 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
2017-12-30 19:20:19 1988595712 [Note] InnoDB: Compressed tables use zlib 1.2.8
2017-12-30 19:20:19 1988595712 [Note] InnoDB: Using Linux native AIO
2017-12-30 19:20:19 1988595712 [Note] InnoDB: Using generic crc32 instructions
2017-12-30 19:20:19 1988595712 [Note] InnoDB: Initializing buffer pool, size = 128.0M
2017-12-30 19:20:19 1988595712 [Note] InnoDB: Completed initialization of buffer pool
2017-12-30 19:20:19 1988595712 [Note] InnoDB: Highest supported file format is Barracuda.
2017-12-30 19:20:21 1988595712 [Note] InnoDB: 128 rollback segment(s) are active.
2017-12-30 19:20:21 1988595712 [Note] InnoDB: Waiting for purge to start
2017-12-30 19:20:21 1988595712 [Note] InnoDB:  Percona XtraDB (http://www.percona.com) 5.6.35-80.0 started; log sequence number 41044545
2017-12-30 19:20:21 1447031616 [Note] InnoDB: Dumping buffer pool(s) not yet started
2017-12-30 19:20:21 1988595712 [Note] Plugin 'FEEDBACK' is disabled.
2017-12-31 13:18:18 1988595712 [Note] Server socket created on IP: '127.0.0.1'.
2017-12-31 13:18:18 1988595712 [Note] /usr/sbin/mysqld: ready for connections.
Version: '10.1.23-MariaDB-9+deb9u1'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  Raspbian 9.0

Nextcloud logs

{"reqId":"WkdehX8AAQEAAF9GgwQAAAAK","level":3,"time":"2017-12-30T09:38:14+00:00","remoteAddr":"151.0.141.74","user":"--","app":"PHP","method":"GET","url":"\/admin\/config.php","message":"Exception: The requested uri(\/admin\/config.php) cannot be processed by the script '\/core\/templates\/404.php') at \/var\/www\/nextcloud\/lib\/private\/AppFramework\/Http\/Request.php#729","userAgent":"curl\/7.15.5 (x86_64-redhat-linux-gnu) libcurl\/7.15.5 OpenSSL\/0.9.8b zlib\/1.2.3 libidn\/0.6.5","version":"12.0.4.3"}
{"reqId":"WkeOgH8AAQEAAF9HSzcAAACN","level":2,"time":"2017-12-30T13:02:56+00:00","remoteAddr":"184.105.247.196","user":"--","app":"core","method":"GET","url":"\/","message":"Trusted domain error. \"184.105.247.196\" tried to access using \"82.95.115.17\" as host.","userAgent":"--","version":"12.0.4.3"}
{"reqId":"WkfRG38AAQEAAF9HSzsAAACL","level":2,"time":"2017-12-30T17:47:07+00:00","remoteAddr":"139.162.106.181","user":"--","app":"core","method":"GET","url":"\/","message":"Trusted domain error. \"139.162.106.181\" tried to access using \"82.95.115.17\" as host.","userAgent":"Mozilla\/5.0 (Windows NT 10.0; WOW64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/50.0.2661.102 Safari\/537.36","version":"12.0.4.3"}
{"reqId":"WkfhDH8AAQEAAF9HSz0AAJMY","level":2,"time":"2017-12-30T18:55:08+00:00","remoteAddr":"82.95.115.17","user":"--","app":"core","method":"POST","url":"\/index.php\/login","message":"Login failed: 'Mecallie' (Remote IP: '82.95.115.17')","userAgent":"Mozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/62.0.3202.94 Safari\/537.36 OPR\/49.0.2725.64","version":"12.0.4.3"}
{"reqId":"WkfhFX8AAQEAAF9HS0IAAJQF","level":3,"time":"2017-12-30T18:55:18+00:00","remoteAddr":"82.95.115.17","user":"Mecallie","app":"index","method":"GET","url":"\/index.php\/apps\/files\/","message":"Exception: {\"Exception\":\"OCP\\\\Files\\\\NotFoundException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/nextcloud\\\/apps\\\/files\\\/lib\\\/Controller\\\/ViewController.php(131): OC_Helper::getStorageInfo('\\\/', false)\\n#1 \\\/var\\\/www\\\/nextcloud\\\/apps\\\/files\\\/lib\\\/Controller\\\/ViewController.php(160): OCA\\\\Files\\\\Controller\\\\ViewController->getStorageInfo()\\n#2 [internal function]: OCA\\\\Files\\\\Controller\\\\ViewController->index('', '', NULL, false)\\n#3 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/Http\\\/Dispatcher.php(160): call_user_func_array(Array, Array)\\n#4 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/Http\\\/Dispatcher.php(90): OC\\\\AppFramework\\\\Http\\\\Dispatcher->executeController(Object(OCA\\\\Files\\\\Controller\\\\ViewController), 'index')\\n#5 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/App.php(114): OC\\\\AppFramework\\\\Http\\\\Dispatcher->dispatch(Object(OCA\\\\Files\\\\Controller\\\\ViewController), 'index')\\n#6 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/Routing\\\/RouteActionHandler.php(47): OC\\\\AppFramework\\\\App::main('ViewController', 'index', Object(OC\\\\AppFramework\\\\DependencyInjection\\\\DIContainer), Array)\\n#7 [internal function]: OC\\\\AppFramework\\\\Routing\\\\RouteActionHandler->__invoke(Array)\\n#8 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/Route\\\/Router.php(299): call_user_func(Object(OC\\\\AppFramework\\\\Routing\\\\RouteActionHandler), Array)\\n#9 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/base.php(1004): OC\\\\Route\\\\Router->match('\\\/apps\\\/files\\\/')\\n#10 \\\/var\\\/www\\\/nextcloud\\\/index.php(48): OC::handleRequest()\\n#11 {main}\",\"File\":\"\\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/legacy\\\/helper.php\",\"Line\":543}","userAgent":"Mozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/62.0.3202.94 Safari\/537.36 OPR\/49.0.2725.64","version":"12.0.4.3"}
{"reqId":"WkfhQX8AAQEAAF9HS00AAJQQ","level":3,"time":"2017-12-30T18:56:02+00:00","remoteAddr":"82.95.115.17","user":"Mecallie","app":"index","method":"GET","url":"\/index.php\/apps\/files\/","message":"Exception: {\"Exception\":\"OCP\\\\Files\\\\NotFoundException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/nextcloud\\\/apps\\\/files\\\/lib\\\/Controller\\\/ViewController.php(131): OC_Helper::getStorageInfo('\\\/', false)\\n#1 \\\/var\\\/www\\\/nextcloud\\\/apps\\\/files\\\/lib\\\/Controller\\\/ViewController.php(160): OCA\\\\Files\\\\Controller\\\\ViewController->getStorageInfo()\\n#2 [internal function]: OCA\\\\Files\\\\Controller\\\\ViewController->index('', '', NULL, false)\\n#3 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/Http\\\/Dispatcher.php(160): call_user_func_array(Array, Array)\\n#4 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/Http\\\/Dispatcher.php(90): OC\\\\AppFramework\\\\Http\\\\Dispatcher->executeController(Object(OCA\\\\Files\\\\Controller\\\\ViewController), 'index')\\n#5 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/App.php(114): OC\\\\AppFramework\\\\Http\\\\Dispatcher->dispatch(Object(OCA\\\\Files\\\\Controller\\\\ViewController), 'index')\\n#6 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/Routing\\\/RouteActionHandler.php(47): OC\\\\AppFramework\\\\App::main('ViewController', 'index', Object(OC\\\\AppFramework\\\\DependencyInjection\\\\DIContainer), Array)\\n#7 [internal function]: OC\\\\AppFramework\\\\Routing\\\\RouteActionHandler->__invoke(Array)\\n#8 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/Route\\\/Router.php(299): call_user_func(Object(OC\\\\AppFramework\\\\Routing\\\\RouteActionHandler), Array)\\n#9 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/base.php(1004): OC\\\\Route\\\\Router->match('\\\/apps\\\/files\\\/')\\n#10 \\\/var\\\/www\\\/nextcloud\\\/index.php(48): OC::handleRequest()\\n#11 {main}\",\"File\":\"\\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/legacy\\\/helper.php\",\"Line\":543}","userAgent":"Mozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/62.0.3202.94 Safari\/537.36 OPR\/49.0.2725.64","version":"12.0.4.3"}
{"reqId":"WkfhSX8AAQEAAF9HS04AAJUR","level":3,"time":"2017-12-30T18:56:09+00:00","remoteAddr":"82.95.115.17","user":"Mecallie","app":"index","method":"GET","url":"\/index.php\/apps\/files\/","message":"Exception: {\"Exception\":\"OCP\\\\Files\\\\NotFoundException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/nextcloud\\\/apps\\\/files\\\/lib\\\/Controller\\\/ViewController.php(131): OC_Helper::getStorageInfo('\\\/', false)\\n#1 \\\/var\\\/www\\\/nextcloud\\\/apps\\\/files\\\/lib\\\/Controller\\\/ViewController.php(160): OCA\\\\Files\\\\Controller\\\\ViewController->getStorageInfo()\\n#2 [internal function]: OCA\\\\Files\\\\Controller\\\\ViewController->index('', '', NULL, false)\\n#3 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/Http\\\/Dispatcher.php(160): call_user_func_array(Array, Array)\\n#4 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/Http\\\/Dispatcher.php(90): OC\\\\AppFramework\\\\Http\\\\Dispatcher->executeController(Object(OCA\\\\Files\\\\Controller\\\\ViewController), 'index')\\n#5 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/App.php(114): OC\\\\AppFramework\\\\Http\\\\Dispatcher->dispatch(Object(OCA\\\\Files\\\\Controller\\\\ViewController), 'index')\\n#6 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/Routing\\\/RouteActionHandler.php(47): OC\\\\AppFramework\\\\App::main('ViewController', 'index', Object(OC\\\\AppFramework\\\\DependencyInjection\\\\DIContainer), Array)\\n#7 [internal function]: OC\\\\AppFramework\\\\Routing\\\\RouteActionHandler->__invoke(Array)\\n#8 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/Route\\\/Router.php(299): call_user_func(Object(OC\\\\AppFramework\\\\Routing\\\\RouteActionHandler), Array)\\n#9 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/base.php(1004): OC\\\\Route\\\\Router->match('\\\/apps\\\/files\\\/')\\n#10 \\\/var\\\/www\\\/nextcloud\\\/index.php(48): OC::handleRequest()\\n#11 {main}\",\"File\":\"\\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/legacy\\\/helper.php\",\"Line\":543}","userAgent":"Mozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/62.0.3202.94 Safari\/537.36 OPR\/49.0.2725.64","version":"12.0.4.3"}
{"reqId":"WkfhTH8AAQEAAF9HS1EAAJUU","level":3,"time":"2017-12-30T18:56:12+00:00","remoteAddr":"82.95.115.17","user":"Mecallie","app":"index","method":"GET","url":"\/index.php\/apps\/files\/","message":"Exception: {\"Exception\":\"OCP\\\\Files\\\\NotFoundException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/nextcloud\\\/apps\\\/files\\\/lib\\\/Controller\\\/ViewController.php(131): OC_Helper::getStorageInfo('\\\/', false)\\n#1 \\\/var\\\/www\\\/nextcloud\\\/apps\\\/files\\\/lib\\\/Controller\\\/ViewController.php(160): OCA\\\\Files\\\\Controller\\\\ViewController->getStorageInfo()\\n#2 [internal function]: OCA\\\\Files\\\\Controller\\\\ViewController->index('', '', NULL, false)\\n#3 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/Http\\\/Dispatcher.php(160): call_user_func_array(Array, Array)\\n#4 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/Http\\\/Dispatcher.php(90): OC\\\\AppFramework\\\\Http\\\\Dispatcher->executeController(Object(OCA\\\\Files\\\\Controller\\\\ViewController), 'index')\\n#5 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/App.php(114): OC\\\\AppFramework\\\\Http\\\\Dispatcher->dispatch(Object(OCA\\\\Files\\\\Controller\\\\ViewController), 'index')\\n#6 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/Routing\\\/RouteActionHandler.php(47): OC\\\\AppFramework\\\\App::main('ViewController', 'index', Object(OC\\\\AppFramework\\\\DependencyInjection\\\\DIContainer), Array)\\n#7 [internal function]: OC\\\\AppFramework\\\\Routing\\\\RouteActionHandler->__invoke(Array)\\n#8 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/Route\\\/Router.php(299): call_user_func(Object(OC\\\\AppFramework\\\\Routing\\\\RouteActionHandler), Array)\\n#9 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/base.php(1004): OC\\\\Route\\\\Router->match('\\\/apps\\\/files\\\/')\\n#10 \\\/var\\\/www\\\/nextcloud\\\/index.php(48): OC::handleRequest()\\n#11 {main}\",\"File\":\"\\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/legacy\\\/helper.php\",\"Line\":543}","userAgent":"Mozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/62.0.3202.94 Safari\/537.36 OPR\/49.0.2725.64","version":"12.0.4.3"}
{"reqId":"WkfiFX8AAQEAAHTPqmIAAIIA","level":3,"time":"2017-12-30T18:59:33+00:00","remoteAddr":"82.95.115.17","user":"Mecallie","app":"index","method":"GET","url":"\/index.php\/apps\/files\/","message":"Exception: {\"Exception\":\"OCP\\\\Files\\\\NotFoundException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/nextcloud\\\/apps\\\/files\\\/lib\\\/Controller\\\/ViewController.php(131): OC_Helper::getStorageInfo('\\\/', false)\\n#1 \\\/var\\\/www\\\/nextcloud\\\/apps\\\/files\\\/lib\\\/Controller\\\/ViewController.php(160): OCA\\\\Files\\\\Controller\\\\ViewController->getStorageInfo()\\n#2 [internal function]: OCA\\\\Files\\\\Controller\\\\ViewController->index('', '', NULL, false)\\n#3 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/Http\\\/Dispatcher.php(160): call_user_func_array(Array, Array)\\n#4 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/Http\\\/Dispatcher.php(90): OC\\\\AppFramework\\\\Http\\\\Dispatcher->executeController(Object(OCA\\\\Files\\\\Controller\\\\ViewController), 'index')\\n#5 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/App.php(114): OC\\\\AppFramework\\\\Http\\\\Dispatcher->dispatch(Object(OCA\\\\Files\\\\Controller\\\\ViewController), 'index')\\n#6 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/Routing\\\/RouteActionHandler.php(47): OC\\\\AppFramework\\\\App::main('ViewController', 'index', Object(OC\\\\AppFramework\\\\DependencyInjection\\\\DIContainer), Array)\\n#7 [internal function]: OC\\\\AppFramework\\\\Routing\\\\RouteActionHandler->__invoke(Array)\\n#8 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/Route\\\/Router.php(299): call_user_func(Object(OC\\\\AppFramework\\\\Routing\\\\RouteActionHandler), Array)\\n#9 <SNIP>
{"reqId":"Wkfl1n8AAQEAAHYSdysAAAMH","level":3,"time":"2017-12-30T19:15:35+00:00","remoteAddr":"82.95.115.17","user":"Mecallie","app":"index","method":"GET","url":"\/index.php\/apps\/files\/","message":"Exception: {\"Exception\":\"OCP\\\\Files\\\\NotFoundException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/nextcloud\\\/apps\\\/files\\\/lib\\\/Controller\\\/ViewController.php(131): OC_Helper::getStorageInfo('\\\/', false)\\n#1 \\\/var\\\/www\\\/nextcloud\\\/apps\\\/files\\\/lib\\\/Controller\\\/ViewController.php(160): OCA\\\\Files\\\\Controller\\\\ViewController->getStorageInfo()\\n#2 [internal function]: OCA\\\\Files\\\\Controller\\\\ViewController->index('', '', NULL, false)\\n#3 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/Http\\\/Dispatcher.php(160): call_user_func_array(Array, Array)\\n#4 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/Http\\\/Dispatcher.php(90): OC\\\\AppFramework\\\\Http\\\\Dispatcher->executeController(Object(OCA\\\\Files\\\\Controller\\\\ViewController), 'index')\\n#5 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/App.php(114): OC\\\\AppFramework\\\\Http\\\\Dispatcher->dispatch(Object(OCA\\\\Files\\\\Controller\\\\ViewController), 'index')\\n#6 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/Routing\\\/RouteActionHandler.php(47): OC\\\\AppFramework\\\\App::main('ViewController', 'index', Object(OC\\\\AppFramework\\\\DependencyInjection\\\\DIContainer), Array)\\n#7 [internal function]: OC\\\\AppFramework\\\\Routing\\\\RouteActionHandler->__invoke(Array)\\n#8 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/Route\\\/Router.php(299): call_user_func(Object(OC\\\\AppFramework\\\\Routing\\\\RouteActionHandler), Array)\\n#9 \\\/var\\\/www\\\/nextcloud\\\/lib\\\/base.php(1004): OC\\\\Route\\\\Router->match('\\\/apps\\\/files\\\/')\\n#10 \\\/var\\\/www\\\/nextcloud\\\/index.php(48): OC::handleRequest()\\n#11 {main}\",\"File\":\"\\\/var\\\/www\\\/nextcloud\\\/lib\\\/private\\\/legacy\\\/helper.php\",\"Line\":543}","userAgent":"Mozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/62.0.3202.94 Safari\/537.36 OPR\/49.0.2725.64","version":"12.0.4.3"}
{"reqId":"Wkfl2H8AAQEAAHYSdy4AAAMK","level":3,"time":"2017-12-30T19:15:36+00:00","remoteAddr":"82.95.115.17","user":"Mecallie","app":"index","method":"GET","url":"\/index.php\/apps\/files\/","message":"Exception: {\"Exception\":\"OCP\\\\Files\\\\NotFoundException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/nextcloud\\\/apps\\\/files\\\/lib\\\/Controller\\\/ViewController.php(131): OC_Helper::getStorageInfo('\\\/', false)\\n#1 \\\/var\\\/www\\\/nextcloud\\\/apps\\\/files\\\/lib\\\/Controller\\\/ViewController.php(160): OCA\\\\Files\\\\Controller\\\\ViewController->getStorageInfo()\\n#2 [internal function]: <SNIP>

everything looks fine, except for the nextcloud logs, where there’s some ‘file not found exception’

I have never had that issue… is it possible that there was a power cut?

Whenever there are ‘unexplainable errors’ I suggest to check for hardware issues, as explained here

Other than that, I would maybe try in the support section of Nextcloud, as it is a pure NC issue. To me it seems like either something weird happened with NC, or your SD card is acting up.