fix healthcheck

app.py

@@ -4105,17 +4105,23 @@ def admin_lists_access(list_id=None):
     )
 
 
-@app.route("/healthcheck")
+@app.route('/healthcheck')
 def healthcheck():
-    header_token = request.headers.get("X-Internal-Check")
-    correct_token = app.config.get("HEALTHCHECK_TOKEN")
-    
+    header_token = request.headers.get('X-Internal-Check')
+    correct_token = app.config.get('HEALTHCHECK_TOKEN')
     if header_token != correct_token:
         abort(404)
-        
-    response_data = {
-        "status": "OK",
-    }
+    
+    try:
+        db.session.execute(text('SELECT 1'))
+        db.session.commit()
+        response_data = {"status": "ok"}
+    except Exception as e:
+        response_data = {
+            "status": "waiting",
+            "message": "waiting for db",
+            "error": str(e)
+        }
     
     return response_data, 200