I also noticed that error occurs with the "delete" function from some other modules too, like: discussion, news, account, where it either gives this DB error shown above (and below) or , I just get this spinning wheel. In Timeline, the delete function works good. Attached are some examples.
Screen Shot 2022-05-15 at 10.38.01 AM.png 
Screen Shot 2022-05-15 at 10.39.56 AM.png 
Screen Shot 2022-05-15 at 10.34.35 AM.png 
Screen Shot 2022-05-15 at 10.31.38 AM.png