Problem with fine tuned assistant GPT-3.5.0125 turbo

I fine-tuned my dataset and it seems fine but when I am using the fine-tuned model in the assistant I get weird answers. Sometimes the assistant is not checking the uploaded pdfs correctly or writes an answer several times. I attached my trainings results and and example from the assistant and in the uploaded file it is clear that the file is from DHL.

I Would really appreciate your help.