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 ('9dff65d4e7539b290c3ee690935df324', -1, 1713856268, 1713856268, '03936878', 2, 0, 0)

Line : 187
File : sessions.php