Failure when manipulating description on aviatrix_firewall_policy.firewall_policy_standard

[bruman]

Failure when manipulating description on aviatrix_firewall_policy.firewall_policy_standard

When setting a description in aviatrix_firewall_policy.firewall_policy_standard or destroying an object with a description

  # module.aviatrix-gateway[0].aviatrix_firewall_policy.firewall_policy_standard["Rule29"] must be replaced
-/+ resource "aviatrix_firewall_policy" "firewall_policy_standard" {
      - description = "SFTP" -> null # forces replacement
      ~ id          = "FQDN-Filter-GW-xxxx~0.0.0.0/0~1.1.1.1/32~tcp~4422~allow" -> (known after apply)
      ~ position    = 3 -> (known after apply)
        # (7 unchanged attributes hidden)
    }

you get an error
Error: json Decode "delete_stateful_firewall_rules" failed: invalid character '<' looking for beginning of value
You get a similar error when trying to create a stateful firewall rule with a description

This is with the aviatrix terraform provider 3.0.1 and 3.0.2