RemoteHostClosedError: The remote host closed the connection

Hello everyone
recently, such an error appeared when connecting to the network
VPN solves this problem completely, however, I would like to understand if there are any problems on my side!
Recently, the server selection has been automatic and sometimes, through repeated attempts, I still manage to connect, but as you understand, this method cannot be called a working one, rather a small test of my nervous system and my luck
Thank you in advance
hsot