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 ('306118fc10c02e8c8f31906c96b94551', -1, 1714042465, 1714042465, '030fbe90', -4, 0, 0)

Line : 187
File : sessions.php