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 ('81c36a9701faac502c0e7fe8c8ed8ac8', -1, 1714654302, 1714654302, '0387c8d3', 20, 0)

Line : 158
File : sessions.php