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 ('b16b85b6cbf65a3b7f0a8f0da6a538ba', -1, 1713905613, 1713905613, '038f04b5', 0, 0, 0)

Line : 187
File : sessions.php