I discovered the issue from other forums. If you have WordFence installed on other websites that are on the same server, delete WordFence on them also. I did that and the issue immediately went away. I have been using Wordfence for years and I am sad to see so many issues posted within the last couple of weeks and no update to the plugin on www.remarpro.com for two months. There is obviously an issue, hopefully, some updates in the future!