Hi!
I’m trying to create a Custom GPT that analyzes files (.xlsx) that I upload in the chat. But everytime I upload a file to the chat, the preview of the .xlsx is showing correctly, but the GPT answers me like no file was uploaded at all, and asks me to upload a file.
EDIT: When uploading the same file to a “New Chat” and copy-pasting the instructions from the Custom GPT, it works as intended. So the file seems to be ok.
Am I doing something wrong?
Anyone experienced the same problem?
Please help 
