var os.ErrNotExist

3 uses

	os (current package)
		error.go#L23: 	ErrNotExist   = fs.ErrNotExist   // "file does not exist"
		error.go#L91: 	return underlyingErrorIs(err, ErrNotExist)

	mime/multipart
		formdata.go#L246: 				if e != nil && !errors.Is(e, os.ErrNotExist) && err == nil {

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