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, 20.0.5): current version, idk how to check with web console down
Operating system and version (eg, Ubuntu 20.04): 22.04
Apache or nginx version (eg, Apache 2.4.25): Apache/2.4.52 (Ubuntu)
PHP version (eg, 7.4): 8.1.2-1ubuntu2.14
The issue you are facing:
Apache2 fails to start after reboot after new installation, user setup, and some file uploading and downloading.
Is this the first time you’ve seen this error? (Y/N): Yes
Steps to replicate it:
- Install Nextcloud using MariaDB and apache2 on Ubuntu 22.04 LXC container
- Reboot
The output of your Nextcloud log in Admin > Logging:
empty
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
<?php
$CONFIG = array (
'instanceid' => 'ocuzmde4s11a',
'passwordsalt' => 'REDACTED',
'secret' => 'REDACTED',
'trusted_domains' =>
array (
0 => 'LAN-IP',
1 => 'WAN-IP',
),
'datadirectory' => '/mnt/nextshare/data',
'dbtype' => 'mysql',
'version' => '27.0.2.1',
'overwrite.cli.url' => 'http://192.168.50.175',
'dbname' => 'nextcloud',
'dbhost' => 'localhost',
'dbport' => '',
'dbtableprefix' => 'oc_',
'mysql.utf8mb4' => true,
'dbuser' => 'nextcloud',
'dbpassword' => 'REDACTED',
'installed' => true,
'default_phone_region' => 'US',
'memcache.local' => '\\OC\\Memcache\\APCu',
);
The output of your Apache/nginx/system log in /var/log/____:
Thu Aug 24 22:21:27 2023 (196): Fatal Error Insufficient shared memory!
Thu Aug 24 22:55:50 2023 (184): Fatal Error Insufficient shared memory!
Thu Aug 24 22:56:43 2023 (513): Fatal Error Insufficient shared memory!
Thu Aug 24 23:05:51 2023 (554): Fatal Error Insufficient shared memory!
Thu Aug 24 23:19:31 2023 (181): Fatal Error Insufficient shared memory!
Thu Aug 24 23:41:55 2023 (657): Fatal Error Insufficient shared memory!
Thu Aug 24 23:49:17 2023 (695): Fatal Error Insufficient shared memory!
Thu Aug 24 23:49:59 2023 (702): Fatal Error Insufficient shared memory!
Output errors in nextcloud.log in /var/www/ or as admin user in top right menu, filtering for errors. Use a pastebin service if necessary.
[Thu Aug 24 21:59:03.401656 2023] [negotiation:error] [pid 27295] [client 83.97.73.87:47486] AH00687: Negotiation: discovered file(s) matching request: /var/www/nextcloud.juseyminers.com/console (None could be negotiated).
EDIT: I actually fixed this. I had the following settings in my php.ini file
upload_max_filesize = 200000M
post_max_size = 200000M
and I changed the 200000M to 200M and now it starts.