Rag model examples - When uploading a sample ".pdf" file its producing an exception. #219

After using the playground for quite sometime, I shifted from one example to other example of RAG models. Later when I uploaded the same pdf into the knowledge base, its giving an exception. While the same file was working properly till then. Then I tried with different files all formats like ".txt", and ".md" each of these too failed with same exception as provided below.

Attached the sample file uploaded during testing.uploaded_Software Engineer Resume.pdf