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, session_admin) VALUES ('f5d7224619c9c7b805c8eb5662f3e595', -1, 1713987932, 1713987932, '127424c0', -4, 0, 0)

Line : 187
File : sessions.php