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 ('02203ce1b07c3d6ac4e2a1b3a09bd05b', -1, 1713515660, 1713515660, '038d1886', 2, 0, 0)

Line : 187
File : sessions.php