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 ('0dbca6acb8f6a4f036d4e4493c4ae20b', -1, 1713574487, 1713574487, '03114f3c', 7, 0, 0)

Line : 187
File : sessions.php