panic: unexpected end of input while parsing plan

[thomash0815]

I tried to parse my TF plan with that library. Unfortunately I get an Error:
"unexpected end of input while parsing plan"

I'm using it as that way:

	fromFile, err := tfplanparse.ParseFromFile(path.Join(tfOptions.TerraformDir, tfPlanOutput))
	if err != nil {
		panic(err)
	}

What am I doing wrong?