Failed to connect to server - Server replied "503 Service unavailable"

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Nextcloud version (eg, 23.0.0): 23.0.0
Operating system and version (eg, Ubuntu 20.04): Ubuntu 20.04
Apache or nginx version (eg, Apache 2.4.25): I dont know how to check this, i assume newest version
PHP version (eg, 7.4): 8.0 or 8.1 i think

The issue you are facing:

when i attempt to login to the windows nc applicaiton i see error "server replied “503 service unavailable” to “GET

my server is running and i am able to access it via the web gui and see the files using smb share.

some googling has led me to guess i have an error with one of my php services running at version 8 or 8.1 and this is not compatible with current nextcloud so that service is down - i dont know how to check this though.

I am very new to ubuntu and nextcloud.

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

yes but this is on a fresh install so its the only time i could have had this error

Steps to replicate it:

  1. attempt to login using the windows application

The output of your Nextcloud log in Admin > Logging:

I don't know how to access this

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

I don't know how to access this

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

I don't know how to access this