No audio for this sentence

有商人愿意出五千万买他的专利，但被他拒绝了。

This sentence came up in a dictation when I took a placement test.

While I was taking the test, I tried listening to this sentence several times, but heard only silence. The other sentences all played normally.

When I checked my answers after finishing the test, I was able to see this sentence in print, but still heard only silence when hitting the link to listen to it.

It's a minor issue, but I though you would want to know.