Problem connecting, socks failure

Recently I’m not able to connect anymore to Tor and other vpns through my provider who blocks access to them. I reinstalled Tor, got bridges from the email, but it still doesn’t work.

The log says :

[WARN] Proxy Client: unable to connect to … ("general SOCKS server failure")

[NOTICE] Delaying directory fetches: No running bridges

I haven’t set any SOCKS proxies, it could be that my provider does.