UNABLE TO LOAD CONVERSATION (Please read and help if possible, thanks!)

My chats are coming up with an error message "Unable to load conversion". It just started this week. It's only conversations where the convo was too long and it told me to start a new chat. I used to still be able to go back to those chats and read them but now any full chat won't load and will say ""Unable to load conversion". My past ones that aren't full still load fine.

I have tried all the troubleshooting, clearing cache, restarting chrome, clearing cookies. logging out all devices, restarting my computer but still on each device, I still get that error message. I have even tried archiving it and unarchiving it and nothing works. My last ditch effort was to export my chats, as someone told me that could help me retrieve the chat but I'm still waiting almost to 72 hours for the file to come to my email.

PLEASE HELP if you know how I can retrieve my chats. I worked hard and spent hours on so many of them and I just want my past work. This all literally started on Wednesday. Thank you guys!!