Couldn't gather components from schema, reason: gnu.math.IntNum cannot be cast to java.lang.String

I want make custom list view card using dynamic component but there is error Couldn’t gather components from schema, reason: gnu.math.IntNum cannot be cast to java.lang.String

here the schema

{
  "name": "Generated Templated",
  "metadata-version": 1,
  "author": "Schema Listview generator tool",
  "platforms": [
    "App Inventor",
    "Kodular",
    "Niotron"
  ],
    "keys": [
    "id",
    "title",
    "subtitle"
  ],
  "components": [
    {
      "id": "Card_View1{id}",
      "type": "MakeroidCardView",
      "properties": {
        "ContentPaddingBottom": 0,
        "ContentPaddingLeft": 0,
        "ContentPaddingRight": 0,
        "ContentPaddingTop": 0,
        "CornerRadius": 20,
        "Height": -1020,
        "Width": -1096
      },
      "components": [
        {
          "id": "HA{id}",
          "type": "HorizontalArrangement",
          "properties": {
            "AlignHorizontal": 3,
            "AlignVertical": 2,
            "Height": -2,
            "Width": -2
          },
          "components": [
            {
              "id": "Space1{id}",
              "type": "SpaceView",
              "properties": {
                "Height": -2,
                "Width": -1002
              }
            },
            {
              "id": "Image1{id}",
              "type": "Image",
              "properties": {
                "Height": 40,
                "Width": 40,
                "Picture": "depositphotos_70164997-stock-illustration-businessman-on-que-in-cafeteria.jpg"
              }
            },
            {
              "id": "Space2{id}",
              "type": "SpaceView",
              "properties": {
                "Height": -2,
                "Width": -1002
              }
            },
            {
              "id": "Vertical_Arrangement1{id}",
              "type": "VerticalArrangement",
              "properties": {
                "AlignHorizontal": 3,
                "Height": -2,
                "Width": -2
              },
              "components": [
                {
                  "id": "Label1{id}",
                  "type": "Label",
                  "properties": {
                    "FontBold": true,
                    "FontSize": 16,
                    "Text": "title"
                  }
                },
                {
                  "id": "Label2{id}",
                  "type": "Label",
                  "properties": {
                    "Height": -2,
                    "Text": "subtitle"
                  }
                }
              ]
            },
            {
              "id": "Space3{id}",
              "type": "SpaceView",
              "properties": {
                "Height": -2,
                "Width": -1002
              }
            },
            {
              "id": "Label3{id}",
              "type": "Label",
              "properties": {
                "FontSize": 40,
                "FontTypeface": 7,
                "Text": "chevron_right",
                "TextAlignment": 1
              }
            },
            {
              "id": "Space4{id}",
              "type": "SpaceView",
              "properties": {
                "Height": -2,
                "Width": -1002
              }
            }
          ]
        }
      ]
    },
    {
      "id": "Horizontal_Arrangement2{id}",
      "type": "HorizontalArrangement",
      "properties": {
        "Height": 2,
        "Width": -2
      }
    }
  ]
}