Update app.py

app.py

@@ -174,10 +174,10 @@ def main():
         new_file = read_pdf(pdf_file)
         # Grading button
         if st.button("Grade Proposal"):
-            if new_file:
-                new_file = json.loads(new_file)
+            if new_file:                
                 final_feedback = grade_essay(input = new_file)
-                df = pd.read_json(str(grade_essay(input = new_file)))
+                final_feedback = json.loads(final_feedback)
+                df = pd.read_json(final_feedback)
                 df = df.T
                 # Store results in session state
                 st.session_state.results.append({