fix: Correct campaign condition

plugin/campaign.py

@@ -204,15 +204,17 @@ class CampaignRegistry:
         condition = Campaign.communityid == cid
 
         if active is not None:
-            active_condition = (
-                Campaign.started_at != NULL and Campaign.completed_at == NULL
+            active_condition = (Campaign.started_at != NULL) & (
+                Campaign.completed_at == NULL
             )
             if active:
-                condition = condition and active_condition
+                condition = condition & active_condition
             else:
-                condition = condition and ~active_condition
+                condition = condition & ~active_condition
 
-        rows = await Campaign.fetch_where(condition)
+        rows = await Campaign.fetch_where(
+            condition,
+        )
         campaigns = [RewardCampaign(row, session=self._session) for row in rows]
 
         return campaigns