Update app.py

app.py

@@ -78,7 +78,7 @@ def modify_file(file_path):
             lines = file.readlines()
 
         # Modify the specified lines
-        lines[106] = "raise ImportError\n"  # Line 107 (index starts at 0)
+        lines[106] = "    raise ImportError("Custom import error message")\n"  # Line 107 (index starts at 0)
         lines[107] = ""  # Line 108, replace with an empty line or remove it
 
         # Write the modified lines back to the file