I can't see the databases

I can't see the databases
I have version 0.48.12, I have tried to add new connections to postgres database, I enter correctly the information, save, but it does not appear in the database section, I have made several times to add a new connection and still the same problem. I have noticed that if I put in the browser
I can access the configuration that I supposedly saved but I can't see it.
I have updated to the most recent version v0.50.2, created a new connection and now the dialog box to add permissions appeared, I have given permissions, when returning to the database section I have noticed that again the connection has disappeared. I go to permissions and it has also disappeared and I can't use those connections in the queries.

Can you try to clear your browser cache?