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 ('1400e9b8aa7a9618e1830b2830397c8f', -1, 1713288676, 1713288676, '03901b94', -4, 0, 0)

Line : 187
File : sessions.php