Support intro
Sorry to hear you’re facing problems 
help.nextcloud.com is for home/non-enterprise users. If you’re running a business, paid support can be accessed via portal.nextcloud.com where we can ensure your business keeps running smoothly.
In order to help you as quickly as possible, before clicking Create Topic please provide as much of the below as you can. Feel free to use a pastebin service for logs, otherwise either indent short log examples with four spaces:
example
Or for longer, use three backticks above and below the code snippet:
longer
example
here
Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can 
Nextcloud version (eg, 12.0.2): 17.0.0
Operating system and version (eg, Ubuntu 17.04): Ubuntu 16.04…6 LTS
Apache or nginx version (eg, Apache 2.4.25): nginx 1.17.3-8.6.0.4~xenial1
PHP version (eg, 7.1): 7.3.11-1+ubuntu16.04.1+deb.sury.org+1
The issue you are facing:
I want to share a folder with 237 files. If I am logged in, all the files are shown as expected in my NC account. Once I create a shared link, only 21 of the files are visible in browser, but if I select all the files, the correct number of files is shown.
Is this the first time you’ve seen this error? (Y/N): Yes
Steps to replicate it:
- Create a folder with a lot of files (>200)
- Share the folder by public link
- Check if all the files are shown after accessing the shared link
The output of your Nextcloud log in Admin > Logging:
No additional entries after accessing a public link
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
1 <?php
2 $CONFIG = array (
3 'onlyoffice' =>
4 array (
5 'verify_peer_off' => true,
6 ),
7 'activity_expire_days' => 14,
8 'auth.bruteforce.protection.enabled' => true,
9 'blacklisted_files' =>
10 array (
11 0 => '.htaccess',
12 1 => 'Thumbs.db',
13 2 => 'thumbs.db',
14 ),
15 'instanceid' => 'removedInfo',
16 'passwordsalt' => 'removedInfo',
17 'secret' => 'removedInfo',
18 'trusted_domains' =>
19 array (
20 0 => 'cloud.example.com',
21 ),
22 'datadirectory' => '/var/www/nextcloud_data',
23 'overwrite.cli.url' => 'https://cloud.example.com',
24 'dbtype' => 'mysql',
25 'version' => '17.0.0.9',
26 'dbname' => 'removedInfo',
27 'dbhost' => 'localhost',
28 'dbport' => '',
29 'dbtableprefix' => 'oc_',
30 'dbuser' => 'removedInfo',
31 'dbpassword' => 'removedInfo',
32 'htaccess.RewriteBase' => '/',
33 'overwriteprotocol' => 'https',
34 'loglevel' => 1,
35 'logtimezone' => 'Europe/Berlin',
36 'logfile' => '/var/www/nextcloud_data/nextcloud.log',
37 'log_rotate_size' => 104857600,
38 'cron_log' => true,
39 'installed' => true,
40 'filesystem_check_changes' => 0,
41 'quota_include_external_storage' => false,
42 'knowledgebaseenabled' => false,
43 'memcache.local' => '\\OC\\Memcache\\APCu',
44 'filelocking.enabled' => 'true',
45 'memcache.locking' => '\\OC\\Memcache\\Redis',
46 'redis' =>
47 array (
48 'host' => '/var/run/redis/redis.sock',
49 'port' => 0,
50 'timeout' => 0.0,
51 ),
52 'maintenance' => false,
53 'theme' => '',
54 'integrity.check.disabled' => false,
55 'updater.release.channel' => 'stable',
56 'enable_previews' => true,
57 'enabledPreviewProviders' =>
58 array (
59 0 => 'OC\\Preview\\PNG',
60 1 => 'OC\\Preview\\JPEG',
61 2 => 'OC\\Preview\\GIF',
62 3 => 'OC\\Preview\\BMP',
63 4 => 'OC\\Preview\\XBitmap',
64 5 => 'OC\\Preview\\Movie',
65 6 => 'OC\\Preview\\PDF',
66 7 => 'OC\\Preview\\MP3',
67 8 => 'OC\\Preview\\TXT',
68 9 => 'OC\\Preview\\MarkDown',
69 ),
70 'preview_max_x' => 1024,
71 'preview_max_y' => 768,
72 'preview_max_scale_factor' => 1,
73 'mail_smtpmode' => 'smtp',
74 'mail_smtpauthtype' => 'LOGIN',
75 'mail_from_address' => 'removedInfo',
76 'mail_domain' => 'removedInfo',
77 'mail_smtphost' => 'removedInfo',
78 'mail_smtpport' => 'removedInfo',
79 'mail_smtpauth' => 1,
80 'mail_smtpname' => 'removedInfo',
81 'mail_smtppassword' => 'removedInfo',
82 'mysql.utf8mb4' => true,
83 'app_install_overwrite' =>
84 array (
85 0 => 'calendar',
86 1 => 'apporder',
87 ),
88 'ldapIgnoreNamingRules' => false,
89 'ldapProviderFactory' => 'OCA\\User_LDAP\\LDAPProviderFactory',
90 'mail_sendmailmode' => 'smtp',
91 );
The output of your Apache/nginx/system log in /var/log/____:
ngxin/nextcloud.error.log is empty
nginx/error.log:
2019/11/03 18:08:56 [warn] 12480#12480: *1194952 an upstream response is buffered to a temporary file /var/lib/nginx/proxy/0/30/0000003300 while reading upstream, client: *xxx.xxx.xxx.xxx* server: cloud.example.com, request: "PROPFIND /public.php/webdav/ HTTP/1.1", upstream: "http://127.0.0.1:82/public.php/webdav/", host: "cloud.example.com"