Mihai Ilie

Hello, When I try to train on a v3-32 TPU with tpu-vm-tf-2.6.0-pod image version, I reveive the following error: ``` Creating heartbeat manager for ['/job:worker/replica:0/task:0/device:CPU:0', '/job:worker/replica:0/task:2/device:CPU:0', '/job:worker/replica:0/task:1/device:CPU:0', '/job:worker/replica:0/task:3/device:CPU:0'] Configuring worker...

## Bug Report Command ./bin/arnold bootstrap -c eugene -e development -k 127.0.0.1 returns error "urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='localhost', port=80): Max retries exceeded with url: /version" **Expected behavior/code** A clear and concise description...