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 ('cf1e7e07f716abe27e6f2f7f9f6a3009', -1, 1714700540, 1714700540, '12768c6c', 0, 0)

Line : 158
File : sessions.php