I have installed Lizmap in a Docker Container on Debian. I basically used the successful Docker Installation from Windows and copied it with a few changes on the Debian server. LIzmap runs, sees the projects - but I cannot open them. It says there is an issue with the group grants:
have you checked
Maps management -> Repository if the user you are logged in at the moment is part of a user group which has access to that repo?
I found the issue meanwhile: with all the projects no user was set in any of the projects. once I activated in the admin panel for each project at least one user it worked!
onother question - though something different:
at the entry page which looks currently like this:
To keep the thread clean, new questions are preferably asked in a new thread (so other users can find it as well) 
Nevertheless: Just upload a png/jpeg with the project name:
as it is written in the official docs: Project thumbnail 
Thx!
Will do!
