diff --git a/api/chalicelib/core/health.py b/api/chalicelib/core/health.py
index e8bf8f909..ffec878ce 100644
--- a/api/chalicelib/core/health.py
+++ b/api/chalicelib/core/health.py
@@ -280,7 +280,7 @@ def cron():
 # this cron is used to correct the sessions&events count every week
 def weekly_cron():
     with pg_client.PostgresClient(long_query=True) as cur:
-        query = cur.mogrify("""SELECT project_id
+        query = cur.mogrify("""SELECT project_id,
                                       projects_stats.last_update_at
                                FROM public.projects
                                     LEFT JOIN public.projects_stats USING (project_id)
@@ -298,7 +298,7 @@ def weekly_cron():
                       "events_count": 0}
 
             query = cur.mogrify("""SELECT COUNT(1) AS sessions_count,
-                                          SUM(events_count) AS events_count
+                                          COALESCE(SUM(events_count),0) AS events_count
                                    FROM public.sessions
                                    WHERE project_id=%(project_id)s
                                       AND start_ts<=%(end_ts)s
diff --git a/ee/api/app_crons.py b/ee/api/app_crons.py
index 6b7621f59..081d4d4d6 100644
--- a/ee/api/app_crons.py
+++ b/ee/api/app_crons.py
@@ -17,7 +17,7 @@ def default_action(action):
     async def _func():
         print(f"{action} not found in crons-definitions")
         print("possible actions:")
-        print(ACTIONS.keys())
+        print(list(ACTIONS.keys()))
 
     return _func
 
@@ -29,7 +29,7 @@ async def process(action):
 if __name__ == '__main__':
     if len(sys.argv) < 2 or len(sys.argv[1]) < 1:
         print("please provide actions as argument\npossible actions:")
-        print(ACTIONS.keys())
+        print(list(ACTIONS.keys()))
     else:
         print(f"action: {sys.argv[1]}")
         asyncio.run(process(sys.argv[1]))
diff --git a/ee/api/chalicelib/core/health.py b/ee/api/chalicelib/core/health.py
index e77f7f5a9..083bfcd43 100644
--- a/ee/api/chalicelib/core/health.py
+++ b/ee/api/chalicelib/core/health.py
@@ -289,7 +289,7 @@ def cron():
 # this cron is used to correct the sessions&events count every week
 def weekly_cron():
     with pg_client.PostgresClient(long_query=True) as cur:
-        query = cur.mogrify("""SELECT project_id
+        query = cur.mogrify("""SELECT project_id,
                                       projects_stats.last_update_at
                                FROM public.projects
                                     LEFT JOIN public.projects_stats USING (project_id)
@@ -307,7 +307,7 @@ def weekly_cron():
                       "events_count": 0}
 
             query = cur.mogrify("""SELECT COUNT(1) AS sessions_count,
-                                          SUM(events_count) AS events_count
+                                          COALESCE(SUM(events_count),0) AS events_count
                                    FROM public.sessions
                                    WHERE project_id=%(project_id)s
                                       AND start_ts<=%(end_ts)s
diff --git a/ee/api/run-crons-dev.sh b/ee/api/run-crons-dev.sh
new file mode 100755
index 000000000..eb9b71b1a
--- /dev/null
+++ b/ee/api/run-crons-dev.sh
@@ -0,0 +1,6 @@
+#!/bin/zsh
+APP_NAME=crons \
+PG_MINCONN=2 \
+PG_MAXCONN=10 \
+PG_POOL=false \
+python app_crons.py $@
\ No newline at end of file