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 ('d6ab31c5dfd60f2f0390aca9c5f98698', -1, 1713515202, 1713515202, '0391105a', -4, 0, 0)

Line : 187
File : sessions.php