PropTypes errors on CollectionList

[lindapaiste]

p5.js version

No response

What is your operating system?

None

Web browser and version

No response

Actual Behavior

Adding a sketch to a collection works just fine, this is only a code-quality issue.

I'm seeing two prop-types validation errors on the CollectionList modal:

checkPropTypes.js:20 Warning: Failed prop type: The prop projectId is marked as required in CollectionList, but its value is null.
in CollectionList (created by Connect(CollectionList))

checkPropTypes.js:20 Warning: Failed prop type: The prop collections[0].items[0].project.createdAt is marked as required in CollectionList, but its value is undefined.
in CollectionList (created by Connect(CollectionList))

Expected Behavior

It should not have errors.

Steps to reproduce

Steps:

1. Open a sketch
2. Click "File" menu
3. Click "Add to Collection"

[lindapaiste]

Quick note on a related issue: there are PropTypes errors on the sketch list for a collection if that collection contains deleted sketches.