Some work arounds...

example_streamlit_app.py

@@ -7,7 +7,7 @@ import base64
 async def highlight_pdf(user_input, pdf_file, make_comments):
     highlighter = Highlighter(comment=make_comments)
     pdf_buffer = io.BytesIO(pdf_file.read())
-    highlighted_pdf_buffer = await highlighter.highlight(user_input, pdf_buffer=pdf_buffer)
+    highlighted_pdf_buffer = await highlighter.highlight(user_input, pdf_filename=pdf_buffer)
     return highlighted_pdf_buffer
 
 def main():

highlight_pdf.py

@@ -334,7 +334,11 @@ class Highlighter:
     ):
         self.llm = LLM(**self.llm_params)
 
-        pdf = pymupdf.open(filename)
+        #! Fix this
+        if not isinstance(filename, io.BytesIO):
+            pdf = pymupdf.open(filename)
+        else:
+            pdf = pymupdf.open(stream=filename, filetype="pdf")
         output_pdf = pymupdf.open()
         vectorizer = TfidfVectorizer()