After you file

So this is what concerns me "We have processed all error free returns received prior to April 2021 and continue to work the returns that need to be manually reviewed due to errors."

 

So this is saying my return has errors. I cannot figure out why that would be. This note makes me more concerned. So millions of people are waiting ... so millions of people filed erroneous tax returns? Just doesn't make sense. I would feel better if they just said they were backlogged ... but they say they have issued all the error-free returns. Is it a backlog or is it that I filled a return that has errors?