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 ('8f1354a8f76b32bef016eb3f0f96b5c5', -1, 1714261865, 1714261865, '038590c5', 5, 0)

Line : 158
File : sessions.php