fix: Fix error on meltano config meltano set ... (meltano#6819)

src/meltano/cli/interactive/config.py

@@ -63,7 +63,6 @@ def __init__(self, ctx, store, extras=False, max_width=None):
         self.project = self.ctx.obj["project"]
         self.settings = self.ctx.obj["settings"]
         self.session = self.ctx.obj["session"]
-        self.plugin = self.ctx.obj["settings"].plugin
         self.tracker = self.ctx.obj["tracker"]
         self.environment_service = EnvironmentService(self.project)
         self.max_width = max_width or 75  # noqa: WPS432

tests/meltano/cli/test_config.py

@@ -70,6 +70,22 @@ def test_config_meltano(
             assert json_config["database_uri"] == engine_uri
             assert json_config["cli"]["log_level"] == "info"
 
+    def test_config_meltano_set(
+        self, project: Project, cli_runner, project_plugins_service
+    ):
+        with mock.patch(
+            "meltano.cli.config.ProjectPluginsService",
+            return_value=project_plugins_service,
+        ):
+            result = cli_runner.invoke(
+                cli, ["config", "meltano", "set", "cli.log_config", "log_config.yml"]
+            )
+            assert_cli_runner(result)
+            assert (
+                "Meltano setting 'cli.log_config' was set in `meltano.yml`: 'log_config.yml'"
+                in result.stdout
+            )
+
     def test_config_test(
         self, project: Project, cli_runner, tap, project_plugins_service
     ):