我假设您找到了解决方案，但是对于找到此帖子的其他人，我也遇到了同样的问题，我只是关闭了PG Admin 4并重新启动了它清理了.

I assume you found a solution, but for anyone else that finds this post, I had the same issue and I just closed PG Admin 4 and restarted it and it cleared up.