Update app.py

app.py

@@ -659,6 +659,7 @@ def check_and_resolve_discrepancy(initial_response, sympy_output):
     Compare the SymPy output with the initial response and resolve any discrepancies.
     Returns tuple of (resolution_text, has_discrepancy, revised_solution)
     """
+    has_disrepancy = False #Initialize
     try:
         resolution_prompt = f"""Here is a mathematics question with two answers.
         The first, called Original solution, is a complete solution.