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 ('0ef7ee6edf83a1fde20e491f94b48e4c', -1, 1713576710, 1713576710, '12e175b7', -4, 0, 0)

Line : 187
File : sessions.php