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 ('cf6a32839df0a0b43b7b627f4cccbf5c', -1, 1713995744, 1713995744, '12dc516a', -10, 0, 0)

Line : 187
File : sessions.php