What could be the error: "media definitions require block statements after any features in file"?

Question

Less

gulp throws an error:
Plumber found unhandled error:
Error in plugin "gulp-less"
Message:
media definitions require block statements after any features in file source\less\style.less line no. 1467

On line 1467 and above, on line 1466, I have nothing, below - there is also nothing - the file ends on line 1465.
Lines above:

.hotel__title {
  margin-bottom: 25px;
}

.hotel__text {
  margin-bottom: 32px;
  line-height: 24px;

}
.btn {
  display: block;
  padding: 19px 0;
  .title-bold();
  .blue();
  border: none;
}

"gulp version 4.0.2"