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) VALUES ('34419884de7fdb203a40041db5201694', -1, 1713888308, 1713888308, '0390ac73', -9, 0)

Line : 158
File : sessions.php