IPFS is offline, please start it over, error detail: TypeError: fetch failed

when i run `npx crust-cli pin test.txt`

i get 
```(node:2180) ExperimentalWarning: The Fetch API is an experimental feature. This feature could change at any time
(Use `node --trace-warnings ...` to show where the warning was created)
IPFS is offline, please start it over, error detail: TypeError: fetch failed
```