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 ('4fcfd3b01fc75468210bc5cf0fbb4d3f', -1, 1713570133, 1713570133, '038accd0', -4, 0, 0)

Line : 187
File : sessions.php