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 ('4cc4165f1310e9bcd7268eb111bd0f45', -1, 1713973254, 1713973254, '12bd027a', 0, 0, '0', '0')

Line : 175
File : sessions.php