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 ('2e85fa3b27a0f7c83a6e93980fa2cb24', -1, 1711718929, 1711718929, '36937b9f', 7, 0, 0)

Line : 187
File : sessions.php