Help with Task 5 - Jr. Penetration Tester Course Web Pentest Issue

A user is working on the Jr. Penetration Tester course and is stuck on Task 5 of the Guided Pentest: Web room. They have repeatedly attempted to execute the command echo This is a test file > test.txt in the attack box and have removed the accept attribute from the file input in the admin/upload.php webpage, but are uncertain if they made an error or missed a step. They are requesting assistance to resolve their issue.