When there is more content in an exercise's folder resources, there is a console error for a missing prop

[sairina]

Observed behavior

When in an exercise and if I click on the "View folder resources" icon, if there are resources, there is an error for the nextContent prop.

Errors and logs

Expected behavior

No errors in console

User-facing consequences

Doesn't seem to have any user-specific consequences outside of the console.

Steps to reproduce

1. Login as a learner
2. Click on an exercise/pdf/etc. that has additional resources (e.g. "pH Scale: Basics")
3. Click on the "view resources" icon (icon furthest left on the right-hand side)
4. Note the prop error

Context

Kolibri 0.15 MacOS Chrome