Issue uploading Image file to post

When I select Upload Inline Image, select image from PC and click on "Add file From your PC" it opens another web page showing TFF main page with all topics.

This just recently started happening. I have always been able to do this in the past. Have not idea how to correct this.

Got it working. Had to downsize the image. Be nice if a warning could have let me know. No big deal. Thanks.