Audio import error

I can’t import wav files to unreal engine 4.18.
I can Import my wav file in version 4.13 to 4.17. can someone help me, or is this a bug?

I can confirm that I can successfully import 16-bit PCM Wav files with a 44100Hz sample rate to Unreal Engine 4.18. I use Audacity to create the audio file. Both mono and stereo are working.

What error message are you getting, if any?

I did forget to convert the audio to 16-bit PCM Wav