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 ('c41f0f2a0e23a70057263f05e9bdc8b8', -1, 1714614121, 1714614121, '03114be3', 20, 0)

Line : 158
File : sessions.php