don't test with error server

Author: yakov-g

tests/functional/test_drum_server_failures.py

@@ -128,10 +128,13 @@ def test_ping_endpoints(self, params, with_error_server, production, docker):
 
     @pytest.mark.parametrize(
         "with_error_server, production, docker",
-        [(False, False, None), (True, False, None), (True, True, DOCKER_PYTHON_SKLEARN)],
+        [(False, False, None), (True, False, None), (False, False, DOCKER_PYTHON_SKLEARN)],
     )
     def test_e2e_no_model_artifact(self, params, with_error_server, production, docker):
         """
+        Note: 12/17/2025 DOCKER_PYTHON_SKLEARN image is going to use gunicorn,
+        so it doesn't support running with error server or production anymore.
+
         Verify that if an error occurs on DRUM server initialization if no model artifact is found
           - if '--with-error-server' is not set, DRUM server process will exit with error
           - if '--with-error-server' is set, 'error server' will still be started, and
@@ -152,10 +155,13 @@ def test_e2e_no_model_artifact(self, params, with_error_server, production, dock
 
     @pytest.mark.parametrize(
         "with_error_server, production, docker",
-        [(False, False, None), (True, False, None), (True, True, DOCKER_PYTHON_SKLEARN)],
+        [(False, False, None), (True, False, None), (False, False, DOCKER_PYTHON_SKLEARN)],
     )
     def test_e2e_model_loading_fails(self, params, with_error_server, production, docker):
         """
+        Note: 12/17/2025 DOCKER_PYTHON_SKLEARN image is going to use gunicorn,
+        so it doesn't support running with error server or production anymore.
+
         Verify that if an error occurs on DRUM server initialization if model cannot load properly
           - if '--with-error-server' is not set, drum server process will exit with error
           - if '--with-error-server' is set, 'error server' will still be started, and