Zotero integration plugin won't accept some files but I don't understand why

For context I’m rather new to obsidian and I have few technical knowledge so maybe i am overlooking somthing rather obvious. I am simply trying to get a Zotero Obsidian workflow going.

My problem is the follwing: I can’t get the Zotero integration plugin to work on all my zotero files but I don’t know why it works on some but not the other bellow is a short video of what happens.

In short : for some files the plugin works just fine but for others it stays stuck on fetchning data from zotero until I force close the Obsidian app.

Here is a link to the pdf I tried to import

Zotero integration Last