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 ('3ad220d1569ab7729fc01d1c7ce54a57', -1, 1714003526, 1714003526, '0317653c', -10, 0, 0)

Line : 187
File : sessions.php