Hi @Sameer_Kalkeri,
Welcome to the community!
This issue looks similar to a previous discussion.
known regression since n8n 1.98 when pdfjs-dist was upgraded to a version that needs browser APIs like DOMMatrix — multiple github issues open on it (#16593, #16438, #16422).
Workaround: Bypass Document Loader for PDFs and use a Code node with the pdf-parse npm package instead. set NODE_FUNCTION_ALLOW_EXTERNAL=pdf-parse in ur env vars, extract the text in Code node, pass the extracted text into Vector Store Insert directly.
It would be great if you can share your workflow JSON to confirm if you are hitting the same issue.