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 ('1357126c6c6ca66d2e29ac14d0340c93', -1, 1730420090, 1730420090, '030c2441', -1280, 0, 0)

Line : 195
File : sessions.php