Update utils.py

utils.py

@@ -96,10 +96,16 @@ def gen_html(num):
     return all_q
 
 def convert_html_to_pdf(source_html, output_filename):
-    result_file = open(output_filename, "w+b")
-    pisa_status = pisa.CreatePDF(
-        io.StringIO(source_html),
-        dest=result_file
-    )
-    result_file.close()
+    try:
+        result_file = open(output_filename, "w+b")
+        pisa_status = pisa.CreatePDF(
+            io.StringIO(source_html),
+            dest=result_file
+        )
+        result_file.close()
+        if pisa_status.err:
+            raise Exception("Error converting HTML to PDF")
+    except Exception as e:
+        print(f"Error: {e}")
+        raise
     return pisa_status.err