I don't know why I cannot solve the message "We noticed your data is single-ended, right?"

[Naoki]

Even if I clicked “Yes” or “No”, I cannot proceed.
I don’t know how I fix.

https://drive.google.com/drive/folders/1tgSONFOvVGmhUeGtTWlaW2jvm8gH7qKY?usp=sharing