Sound in 4.26 and 4.27

Hello. I had a project on 4.26. I downloaded ue4.27. And I decided to change the version of the project to 4.27. I changed it. But when I throw sounds there, they are not there. That is, I click on the sound, but they are not played. For the test, I created a new project on 4.27. Sounds are played. What do you think I should do?

The problem is solved. Thanks!