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 ('1979bb6daf7450cf9d37e2f7d7e22dfa', -1, 1714660923, 1714660923, '12d87b78', 2, 0)

Line : 158
File : sessions.php