* Source must be specified

Hello, I’m getting an error * Source must be specified. when I’m trying to use both qemu and vsphere-iso builder types.

Build:

packer build -debug -var-file=qemu-variables.json  ccscanner-qemu.json 

arozar$ packer build -debug -var-file=qemu-variables.json  ccscanner-qemu.json 
Error: Failed to prepare build: "qemu"

1 error(s) occurred:

* Source must be specified.

Debug mode enabled. Builds will not be parallelized.

==> Builds finished but no artifacts were created.

Validate:

packer validate -var-file=qemu-variables.json  ccscanner-qemu.json

arozar$ packer validate -var-file=qemu-variables.json  ccscanner-qemu.json 
Error: Failed to prepare build: "qemu"

1 error(s) occurred:

* Source must be specified.

Packer Version:

packer --version
1.6.0

Can you share your json files?