> For the complete documentation index, see [llms.txt](https://abangser.gitbook.io/kubecon2022/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://abangser.gitbook.io/kubecon2022/errors/make-run-errors-during-fmt-or-vet-stage.md).

# \`make run\` errors during fmt or vet stage

### An example error

When you run `make run` it will first run `go fmt` and `go vet`. If either of these commands find issues you will see an error like this:

```bash
root@kubernetes-vm:~/demo# make run
test -s /root/demo/bin/controller-gen || GOBIN=/root/demo/bin go install sigs.k8s.io/controller-tools/cmd/controller-gen@v0.9.2
/root/demo/bin/controller-gen rbac:roleName=manager-role crd webhook paths="./..." output:crd:artifacts:config=config/crd/bases
/root/demo/bin/controller-gen object:headerFile="hack/boilerplate.go.txt" paths="./..."
go fmt ./...
go vet ./...
# my.domain/controllers
controllers/website_controller.go:78:6: undefined: errors
controllers/website_controller.go:89:6: undefined: errors
# my.domain/controllers
vet: controllers/website_controller.go:78:6: undeclared name: errors
make: *** [Makefile:55: vet] Error 2
```

### Fixing the issue

`go fmt` should be run on save in the `Code editor`. If you chose to edit the files in a different way (e.g. via `vim`) it would be easiest to open the file in the `Code editor` tab, make a small white space change (e.g. enter an extra new line somewhere) and then save the file using `ctrl+s` (or `cmd+s` on a mac).

If you want to continue using another editor, make sure to run the appropriate fmt commands prior to running `make run`.