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) VALUES ('27ffd2378e7ef355c9a35b5b7ee163ba', -1, 1714795817, 1714795817, '038d08f7', -7, 0)

Line : 158
File : sessions.php