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 ('9ab2452e50dad4d0a341c374822befaf', -1, 1714723220, 1714723220, '03889a67', 20, 0)

Line : 158
File : sessions.php