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 ('23ff945fb5c95ee3ba1f15a2a40643e2', -1, 1713568270, 1713568270, '12ddaef8', -10, 0, 0)

Line : 187
File : sessions.php