Does anyone have anymore information about Error #2136?

I have been trying to figure out the cause of this error for a long time. My original post was last month can be seen here https://community.adobe.com/t5/animate-discussions/adobe-animate-has-a-serious-bug/m-p/14738919/page/2#M377142.

im just wondering if anyone has anymore information on error #2136. Yes i know it says "file contains invalid data" but that doesnt really tell me anything useful. does anyone have any information on what exactly may cause this error?  i can not find a single thing on the internet or adobe's website