App assume the content exist in MeiliSearch

[fharper]

I got this error when I run the app, because I didn't create the index or import the data yet. It's a good practice to use try catch to manage potential errors like this one.

[fharper]

Maybe not an issue in the demo app, but let's check how the lack of data is displayed to the user in the web interface. It may be an issue with the instantsearch integration that doesn't display this problem gracefully to the user.

[CaroFG]

https://github.com/meilisearch/meilisearch-vue/issues/7

[bidoubiwa]

Fixed by: meilisearch/meilisearch-js-plugins#216 ( I cannot close but it should be closed )