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 ('3861a06464b55ea45d0a38f91f05a9dc', -1, 1714328758, 1714328758, '0315a257', 23, 0)

Line : 158
File : sessions.php