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 ('01acfb05fea635695d3dc9ac435da8e2', -1, 1713924597, 1713924597, '12756b5a', -2, 0, 0)

Line : 187
File : sessions.php