puppetlabs/puppet · error · SerializationError

Unable to deserialize type from %{type}

Error message

Unable to deserialize type from %{type}

What it means

Error "Unable to deserialize type from %{type}" thrown in puppetlabs/puppet.

Source

Thrown at lib/puppet/pops/serialization/from_data_converter.rb:128

        PCORE_TYPE_DEFAULT => proc do |_, _|
          build(:default)
        end,

        PCORE_TYPE_SYMBOL => proc do |hash, _|
          build(:"#{hash[PCORE_VALUE_KEY]}")
        end,

        PCORE_LOCAL_REF_SYMBOL => proc do |hash, _|
          build(JsonPath::Resolver.singleton.resolve(@root, hash[PCORE_VALUE_KEY]))
        end
      }
      @pcore_type_procs.default = proc do |hash, type_value|
        value = hash.include?(PCORE_VALUE_KEY) ? hash[PCORE_VALUE_KEY] : hash.reject { |key, _| PCORE_TYPE_KEY == key }
        if type_value.is_a?(Hash)
          type = without_value { convert(type_value) }
          if type.is_a?(Hash)
            raise SerializationError, _('Unable to deserialize type from %{type}') % { type: type } unless @allow_unresolved

            hash
          else
            pcore_type_hash_to_value(type, value)
          end
        else
          type = Types::TypeParser.singleton.parse(type_value, @loader)
          if type.is_a?(Types::PTypeReferenceType)
            unless @allow_unresolved
              raise SerializationError, _('No implementation mapping found for Puppet Type %{type_name}') % { type_name: type_value }
            end

            hash
          else
            # not a string
            pcore_type_hash_to_value(type, value)
          end
        end

View on GitHub (pinned to e227c27540)

When it happens

Trigger: Thrown at lib/puppet/pops/serialization/from_data_converter.rb:128 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of puppetlabs/puppet@e227c27540 (2026-08-21). Data as JSON: /api/errors/a303761f9a87d02e. Report an issue: GitHub.