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 ('dc309f8b5937a68466a5ab2e6f213fa0', -1, 1715926140, 1715926140, '12deb5d8', 21, 0)

Line : 158
File : sessions.php