```
StreamBuilder<QuerySnapshot>(
                    stream: catatan.snapshots(),
                    builder: (_, snapshot) {
                      if (snapshot.hasData) {
                        return Column(
                          children: snapshot.data.docs.map((e) =>
                                  Data(e.data()['judul'], e.data()['isi']))
                              .toList(),
                        );
                      } else {
                        return Text('Data Kosong');
                      }})

```

I get an error in **['judul']** and **['isi']**

**Error message:
The operator '[]' isn't defined for the type 'Object'.
Try defining the operator '[]'.**

can you guys help me :)