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 ('b163371d1ab6de7148cd0f7faad9dd01', -1, 1714615885, 1714615885, '038e0cf0', -54, 0, 0)

Line : 187
File : sessions.php