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 ('77a1e7a202ea1201202ce94349cc395b', -1, 1713941629, 1713941629, '2cc81bd7', -7, 0, 0)

Line : 187
File : sessions.php