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 ('daf0a7c6dd4019002bdb3c66d87effdf', -1, 1713438301, 1713438301, '0389c7a2', -4, 0, 0)

Line : 187
File : sessions.php