fix: Prevent 'Working outside of application context' errors on Celery

superset/tasks/celery_app.py

@@ -63,9 +63,10 @@ def teardown(  # pylint: disable=unused-argument
     :see: https://gist.github.com/twolfson/a1b329e9353f9b575131
     """
 
-    if flask_app.config.get("SQLALCHEMY_COMMIT_ON_TEARDOWN"):
-        if not isinstance(retval, Exception):
-            db.session.commit()  # pylint: disable=consider-using-transaction
+    with flask_app.app_context():
+        if flask_app.config.get("SQLALCHEMY_COMMIT_ON_TEARDOWN"):
+            if not isinstance(retval, Exception):
+                db.session.commit()  # pylint: disable=consider-using-transaction
 
-    if not flask_app.config.get("CELERY_ALWAYS_EAGER"):
-        db.session.remove()
+        if not flask_app.config.get("CELERY_ALWAYS_EAGER"):
+            db.session.remove()