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 ('01120b1f3b8921a3dc37c2e96c70c3e5', -1, 1713480576, 1713480576, '12d8bea7', 5, 0, 0)

Line : 187
File : sessions.php