Welcome, @septintasfortas
These resources cover server configuration. Even if you are not doing the full production installation, the examples can help to resolve configuration problems with components.
Some examples are in this tutorial Galaxy Installation with Ansible
Do you mean that the primary Galaxy server itself is not available? The web service?
If you are accessing via an interactive environment instead, this tutorial can help Galaxy Interactive Tools
Please clarify a bit more if I misunderstood!