Autodeploy on VCA 5.5

I'm struggling to get auto deploy working on a VCA 5.5.

The ESX server boots up via PXE but failed to get an ESXi image, see screenshot below

The TFTP server is reachable via a web browser https://192.168.2.21:6501/vmw/rbd/ and the url https://192.168.2.21:6501/vmw/rbd/cache/ show all uploaded files.

I created a deployment rule with the –AllHost

So why doesn’t receive the ESX a ESXi image?