there is something wrong with insertFieldValue

[MadSummer]

the insertFieldValue is wrong ?

  const insertFieldValue = React.useCallback((field, index, value, options) => {
    apiRef.current.setFieldValue(
      field,
      old => {
        if (Array.isArray(old)) {
          return old.map((d, i) => (i === index ? value : d))
        } else {
          throw Error(
            `Cannot insert a field value into a non-array field. Check that this field's existing value is an array: ${field}.`
          )
        }
      },
      options
    )
  }, [])

[crutchcorn]

This issue should be resolved now as of:

#404