``` Terraform v0.12.13 ``` ``` HCL code not relevant ``` ### Error Output Failed to marshal plan to json: error marshaling prior state: unsupported attribute "purpose" ### Expected Behavior terraform should have parsed the default plan file to json output. ### Actual Behavior Failed to marshal plan to json: error marshaling prior state: unsupported attribute "purpose" No json output generated ### Steps to Reproduce 1. Run terraform plan with a -target flag 2. Show the plan using terraform show with the -json flag 3. Error raised ### Additional Context This is the full command I actually run: ``` terraform plan -var-file ../tfvars/compute.tfvars.json -target=module.network -out plan.bin terraform show -json plan.bin > plan.json ``` Also, when planning without a -target, this works as expected. This is my first issue , please let me know if I need to add anything else.