Fixed misleading error message for database connection failures.

main.py

@@ -39,7 +39,7 @@ def main():
         app = MoviesApp()
         app.run()
     except SQLAlchemyError as exception:
-        print('Initial database connection failed!', file=stderr)
+        print('Database connection failed!', file=stderr)
         print(f'Cause: {exception}', file=stderr)
         exit(1)