phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('b18a5cad93354bd2c6eb913b0b995cc2', -1, 1715087742, 1715087742, '1276019e', 7, 0, 0)

Line : 189
File : sessions.php