Absurd noise in console

[trys]

(node:91690) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
(node:91690) UnhandledPromiseRejectionWarning: Couldn't create folder: ./public/why/
(node:91690) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 2)

Is it actually rebuilding here?

[trys]

Create all the folders first?