Empty index page return

Hi All, my apology if I am posting in a wrong channel. I was working on Front Accounting creating users. After testing reports and queries (default installation data) I received at one point a blank page. Any click on any URL will result to a blank page. Since some days now I have trying to resolve this to no avail. I use a front account docker container connected to a docker container of MySQL. In the logs is logs only the web browser accessing it links. No information the logs for analysis. Restarted both containers several times to no avail. I will appreciate for your support.