Chrome plugin dont connect to self hosted

Hello, I have had problems with Bitwarden for years.

The thing is that by installing everything from scratch I can create my account and make the first login, but after a while the Chrome plugin loses the connection with the server. The local credentials database is maintained and usable but when trying to make any changes such as editing or entering a new entry it tells me that it cannot connect to the server (failed to fetch error).

My setup is the following, I run the server in Docker on Lunux, I use a self-generated certificate and I use the internal/local IP of the server to connect from the chrome plugin (I do it this way since I only use bitwarden on my local network, not I’m interested in connecting from outside of it).

If I try to enter bitwarden using the web interface with the local IP of that server, I can succeed without problems.

Any idea what it could be?

Thank you very much in advance.