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, session_admin) VALUES ('ee8fc40e7ebdedb21cf8f1817a5e9706', -1, 1713501980, 1713501980, '03858d06', -10, 0, 0)

Line : 187
File : sessions.php