PDF Reading Error

Using Google Gemini, I created a Gem / App to extract information from a large PDF document. It worked great.

The problem with Gem is that I can’t share the Gem like what I can do with an App in Chipp.

So I copied the instruction prompts from Gemini on Chipp.

However, every time after I upload the PDF, in Chipp App, it responds "There was an error while processing the PDF document."

I suspect the file is too large for Chipp to handle? I used Gemini 2.5 Pro for the Gem, but the latest Gemini model in Chipp is 1.5 Pro.