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 ('cabb771fe2dffb92ccbfc251d87229f7', -1, 1714662965, 1714662965, '1276a662', -2, 0)

Line : 158
File : sessions.php