Update app.py

app.py

@@ -74,7 +74,7 @@ def transform_to_pdf(tex_content):
     url = "https://www.latexonline.cc/compile"
     
     # Send LaTeX source for compilation
-    response = requests.post(url, data={"text": latex_source, "target": "pdf"}, verify=False)  # Disable SSL verification
+    response = requests.post(url, data={"text": tex_content, "target": "pdf"}, verify=False)  # Disable SSL verification
     
     if response.status_code == 200:
         pdf_url = response.url  # Get the PDF URL