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 ('f7a840f593a8f0cca0f6261ad5ff67ed', -1, 1714698863, 1714698863, '127551f0', 17, 0)

Line : 158
File : sessions.php