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 ('a0023bca8c7b35b8e06e19197e3c709c', -1, 1713951021, 1713951021, '12743fec', 7, 0)

Line : 158
File : sessions.php