Discussion about using Portable Text-editor in Sanity and resolving errors.

export default {
  title: "Song",
  name: "song",
  type: "object",
  fields: [
    {
      title: "created",
      name: "created",
      type: "date",
      validation: (Rule: any) => Rule.required(),
    },
    {
      tile: "songFile",
      name: "songFile",
      type: "file",
    },
    {
      tile: "songName",
      name: "songName",
      type: "string",
    },
    {
      name: 'content',
      title: 'Content',
      type: 'array',
      of: [
        {
          type: 'block',
          marks: {
            decorators: [
              { title: 'Strong', value: 'strong' },
              { title: 'Emphasis', value: 'em' },
              { title: 'Code', value: 'code' }
            ]
          }
        }
      ]
    }
  ],
};