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 ('bf1c4e1a4728df99f4c698fdd7704338', -1, 1748873999, 1748873999, '038f90d1', -9, 0, 0)

Line : 190
File : sessions.php