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 ('1e753a890e6a4db898ebff9efe03e355', -1, 1713469701, 1713469701, '12760c65', -7, 0, 0)

Line : 187
File : sessions.php