Consuming viacep api using ui material

Good night!
I’m making a delivery record and I wanted to consume a zip code api to automatically fill in the address, city, state and neighborhood fields using the ui material, I’m not able to put the information in the mentioned fields and when I take the auto focus off the zip code field disappear.

const checkZIPCODE = (event) => {
    const zipCode = event.target.value.replace(/D/g, '');
    console.log(zipCode);
    fetch(`https://viacep.com.br/ws/${zipCode}/json/`)
      .then(response => response.json())
      .then(data => {
        console.log(data)
        setCEP('address', data.address)
        setCEP('uf', data.uf)
        setCEP('city', data.city)
        setCEP('district', data.district)
      })
  }
<NumberFormat
        onChange={(event) => setZipCode(event.target.value)}
        value={zipCode}
        onBlur={validateFields}
        error={!error.zipCode.valid}
        helperText={error.zipCode.text}  
        name='zipCode'
        mask={"_"}
        customInput={TextField}
        format={"#####-###"}
        type="text"
        variant="outlined"
        id='zipCode'
        label='ZIPCODE'
        fullWidth
        margin='normal'
        required
      />
      <TextField
        value={address}
        onChange={(event) => setAddress(event.target.value)} 
        onBlur={validateFields}
        error={!error.address.valid}
        helperText={error.address.text}
        placeholder='Rua Barata Ribeiro'
        id='address'
        label='Address'
        type='text'
        name='address'
        variant='outlined'
        margin='normal'
        fullWidth
        required
      />
      <TextField
        style={{ marginRight: 25 }}
        value={number}
        onChange={(event) => setNumber(event.target.value)} 
        onBlur={validateFields}
        error={!error.number.valid}
        helperText={error.number.text}
        placeholder='10'
        id='number'
        label='Number'
        type='number'
        name='number'
        variant='outlined'
        margin='normal'
        required
      />
      <TextField
        value={uf}
        onChange={(event) => setUf(event.target.value)} 
        onBlur={validateFields}
        error={!error.uf.valid}
        helperText={error.uf.text}
        placeholder='RJ'
        id='uf'
        label='Uf'
        type='text'
        name='uf'
        variant='outlined'
        margin='normal'
        required
      />
      <TextField
        style={{ marginRight: 25}}
        value={city}
        onChange={(event) => setCity(event.target.value)} 
        onBlur={validateFields}
        error={!error.city.valid}
        helperText={error.city.text}
        placeholder='Rio de Janeiro'
        id='city'
        label='City'
        type='text'
        name='city'
        variant='outlined'
        margin='normal'
        required
      />
      <TextField 
        value={district}
        onChange={(event) => setDistrict(event.target.value)}
        onBlur={validateFields}
        error={!error.district.valid}
        helperText={error.district.text}
        placeholder='Copacabana'
        id='district'
        label='District'
        type='text'
        name='district'
        variant='outlined'
        margin='normal'
        required
      />