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A `pulumi up` failed and now I get several messages like this:
```
 aws:elasticloadbalancingv2:LoadBalancer (e839e3dc):
    error: Plan apply failed: refreshing urn:pulumi:fib-autoscale::fib::awsx:x:elasticloadbalancingv2:ApplicationLoadBalancer$aws:elasticloadbalancingv2/loadBalancer:LoadBalancer::e839e3dc: Error retrieving ALB: ValidationError: 'arn:aws:elasticloadbalancing:us-west-2:710312645543:loadbalancer/app/e839e3dc-3597e49/e54545127f980ecc' is not a valid load balancer ARN
    	status code: 400, request id: e2522ac7-7d72-11e9-a259-a7fa9e6e25ad
```
How do you resolve this kind of error?

I have not seen this error before. 

It makes it sound like somehow your load balancer does not exist in the cloud?  Is that right?  

If so, one option would be to force Pulumi to forget it with `pulumi state delete`. 

It _appears_ like it's not there. I would've though `pulumi refresh` would have this?