i have been having the same problem as well, I was randomly booted out of my account and when i tried to log in i had the exact same error message. I thought it was an error with the launcher so i reinstalled. When i did the the minecraft.net site wouldnt even let me log in with an error message: https://www.minecraft.net/en-us/login?error=InternalServerError&error_description=Some+exception+happenen#state=login. This issue has been happening for almost a week now for me and i need to get back to my account.
ScottsScotts
i have been having the same problem as well, I was randomly booted out of my account and when i tried to log in i had the exact same error message. I thought it was an error with the launcher so i reinstalled. When i did the the minecraft.net site wouldnt even let me log in with an error message: https://www.minecraft.net/en-us/login?error=InternalServerError&error_description=Some+exception+happenen#state=login. This issue has been happening for almost a week now for me and i need to get back to my account.