Lamp app in error state `MYSQL_HOST: unbound variable`

[ruihildt]

I have a LAMP PHP 7.2 app, with some php code running, which is not responding for a few days.

Here's what I can read in the logs, on repeat:

Mar 17 16:11:46 ==> Do not override existing index file
Mar 17 16:11:46 ==> Running custom startup script
Mar 17 16:11:46 ==> Imported crontab
Mar 17 16:11:46 ==> Creating credentials.txt
Mar 17 16:11:46 /app/code/start.sh: line 47: MYSQL_HOST: unbound variable

I have tried to restore a backup but I keep getting Manifest version must be 2.
When I tried to update the app to the latest package, the check for Updates never stop loading.

What can I do to solve this?

[nebulon]

@ruihildt the solution is provided at https://forum.cloudron.io/topic/6612/lamp-unbound-variable-mysql

[ruihildt]

@nebulon Thanks, I had searched before posting, but not well enough apparently.