Oh lord, here I go again... (debugging help)

Tbh i'm feeling bad flooding forums with these questions but this is urgent.

So, I installed All-In-One WP migration plug in to create a backup, so i could play around changing themes etc. I have downloaded the back up to my pc, played around a bit and then figured out that it's not worth changing the theme, so i tried to install my back up, however, as i was doing it, the installation progress stopped at "downloaded mu-plugins" or something like that. So i refreshed the page and now the website has critical error. (no wordpress email however)

I tried deactivating my plug-ins via SFTP access, but it didn't work out. Currently i'm downloading everything in "wp-content/themes" to delete them and see what's up, but not sure if it is gonna help.

I'm not so well versed in SFTP/PHP yet so i'm trying to not mess things up completely.

What should i do and how should i go about it?

Thank you

try deleting plugins as well that seems to be the problem here.
you can also enable debugging by adding to wp-config file for further investigation
and use this old version of migration plugin, latest one doesn't seem to work for everyone

starlord1670 said:

try deleting plugins as well that seems to be the problem here.
you can also enable debugging by adding

PHP:

define( 'WP_DEBUG', true );

to wp-config file for further investigation
and use this old version of migration plugin, latest one doesn't seem to work for everyone

Click to expand...

Again, appreciate the help immensely! I retrieved a server back up so I’m all set rn