Thoughts? This happens once a day

Quote
INSERT INTO ubbt_WATCH_LISTS
(USER_ID, WATCH_ID, WATCH_TYPE, WATCH_NOTIFY_IMMEDIATE)
VALUES
('', 10, 'f', 0)
- Incorrect integer value: (for column `a`.`WATCH_LISTS`.`USER_ID` at row 1

Last edited by DaveZ; 09/26/2021 4:10 PM. Reason: trying to find "follow post" control