I am having similar symptoms and in my case it’s a problem with the recent update to PHPStorm (2020.3). If you are using PHPStorm and have updated to 2020.3 you could try rolling back to PHPStorm 2020.2 - this worked for me.
According to JetBrains the issue is related to a bug in XDebug and changes they made in 2020.3, but I can’t test that unless there’s a way to upgrade XDebug in local (see my recent post. It should also, hopefully, be fixed in the next update to PHPStorm.