Internal error bad request follow update

Hello,

I have been using nextcloud under docker for several years and following the last update of the container my site displays an abstract error.

In the file: log / nginx / access.log I find:

172.18.x.x - - [05/Aug/2021:07:21:53 +0200] "GET / HTTP/1.1" 500 3665 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36"
172.18.x.x - - [05/Aug/2021:07:21:54 +0200] "GET /apps/theming/favicon?v=1 HTTP/1.1" 500 3665 "https://nextcloud.xxxxx.xxx/" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36"
172.18.x.x - - [05/Aug/2021:07:21:54 +0200] "GET /apps/theming/icon?v=1 HTTP/1.1" 500 3665 "https://nextcloud.xxxxxx.xxxx/" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36"

my browser displays:

Internal Server Error
The server is unable to perform your request.

If this happens again, please send the technical details below to the server administrator.

The server log file can provide more information.

Technical information
Remote address: 172.18.x.x
Request ID: a4WQCz3hvutQpSmxI08u

I do not understand. The front-end NGINX server does not display an error and the NEXTCLOUD container correctly resolves the name of the NGINX container

Following the last evolution, do I have to change anything in my configuration?

Thanks for your help

Good evening,

I found where the concern came from. Too high a version upgrade of the database engine. I went back to version 10.5 instead of 10.6 and it works.

Thank you good evening