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 ('ae754fbb9a222938069a7cb22af7b119', -1, 1635212113, 1635212113, '035003c0', -4, 0, 0)

Line : 187
File : sessions.php