Strapi V4 refuses to save nested components

Questions and Answers
8

I had this problem after migration from v3 to v4. In my case component with image field was not migrated. I had to change image field in component’s JSON file from

"image": {
      "model": "file",
      "via": "related",
      "allowedTypes": [
        "images"
      ],
      "plugin": "upload",
      "required": false,
      "pluginOptions": {}
    },

to

"image": {
      "allowedTypes": [
        "images"
      ],
      "type": "media",
      "multiple": false
    },

and change component’s “name” field to “displayName”.
Then it worked well