Component Error Winter 21 Release

If you get error on ‘Tasks Component/Events Component’

This is because Salesforce enforces APEX security access for @AuraEnabled Components started Winter 21 Release. See the details on this URL below:
https://releasenotes.docs.salesforce.com/en-us/winter21/release-notes/rn_lc_crucs.htm

Therefore, if you do not have webider_**** APEX classes access added to the user profiles, then they will not be able to see the data in our components.

Please update the user profiles and add APEX Class Access and add all the classes started with webider_ prefix and this should resolve the issue.