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 ('9c9255e1c913021a0f843e687e4a2402', -1, 1714728816, 1714728816, '038ac842', 7, 0)

Line : 158
File : sessions.php