Connection issue and Flashbacks

the lightning app is always losing connections for no reason and shutting down the terminal, without any error message. Tried to reinstall completely but still having the same issue. Recently a new issue arose, when comes to label frame tab, the browser prompts the user to enter pword and username, which are user@localhost and pw, but after entering nothing ever happens, and not any error message. But shows mismatch thing when entering wrong username or pword, just nothing logining in and I do need to label more from the image. Tried reboot many times and not working.
Additionally, after training the model to 100%, the error comes again and connections are lost. And sometimes not reaching 100, have to rerun the app over and over which is time-consuming and exhausting.
Please let me know if this is a common issue or the possible solutions since I have tried everything I could.

Same here. Recently it’s happening very often… And it happens much more frequently when using Google Cloud Space instead of AWS.