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 ('732e7268d8c91a7d0347d5cbad358d6a', -1, 1714732013, 1714732013, '038fe428', -11, 0, 0)

Line : 187
File : sessions.php