phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('a956f80f81dcb60f222e4611c2b55e7c', -1, 1714410587, 1714410587, '127666e1', 13, 0)

Line : 158
File : sessions.php