Handle missing data gracefully

[oscarlorentzon]

Motivation

Provide understandable error messages when data is missing and only log relevant error information.

Contribution

• Throw with informative message if image is not populated correctly
• Throw with informative message if image thumb URL is not valid
• Do not request mesh if URL is not valid
• Avoid null reference error by checking for cluster existence

Test Plan

yarn lint
yarn build
yarn test
yarn start