I'm getting and Error Message when I try to post.
 

When I try to post I am getting this message. At first I thought my picture was not sized corrected but I have checked that and my picture is less than 2 MB. What does it mean and how do I fix it.

"Type Error: Unsupported operand types: array & int in.../includes/class_postbit.php on line 499"

We have noticed some issues between stated size and what actually works...

I've been using this site for years (no affiliations) they now have subscription options but when I used it last month my 2-3 pictures were all free with no problems. I use their set defaults. Remember to download the image (3 steps -- drag picture over, reduce image, and download) so you can upload it here.

https://www.reduceimages.com/

Try it and see if it works!