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 ('3c4821812af7c79b5fe67d86ba5c1c2b', -1, 1714770630, 1714770630, '0395e948', 12, 0)

Line : 158
File : sessions.php