Error on lesson-29

Hi!

I'm coding along with the Youtube Svelte Beginners course (great course)

After adding the store file, I get this error on clicking on any of the answers of the Python or Javascript poll:

```
Uncaught ReferenceError: polls is not defined
handleVote @ bundle.js:2220
(anonymous) @ bundle.js:153
bubble @ bundle.js:153
vote_handler @ bundle.js:1738
(anonymous) @ bundle.js:142
(anonymous) @ bundle.js:141
handleVote @ bundle.js:1492
click_handler @ bundle.js:1501
```
The error presist even after I downloaded the lesson-29 branch of this repo and freshly installed it with ```npm install``` and running ```npm run dev```.

**What could be wrong?**