phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO cantautore_phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin, is_robot) VALUES ('c176f250390d1c704384d6bc922b2bb9', -1, 1714090845, 1714090845, '12dd97af', 2, 0, '0', '0')

Line : 175
File : sessions.php