Hi, I enrolled for "Pega Decisioning Consultant (v8.0)" course. I am currently at "Unit 15 of 24: Designing decision strategies for real-life scenarios". I am trying to complete an assignment on the cloud instance. I am unable to create offers/propositions under the required issue/group i.e Sales > Cards. I am getting a null pointer exception when trying to click Create and Open. Actually I was trying to upload the offers from an excel sheet. But due to slowness or someother issue, the upload kept failing partially. So I tried deleting the offers created. I think in that process, I have deleted some rule related to cards group. That might be the reason for the null pointer exception.
The easiest way to fix it is to just wait for 4h, the cloud will expire, and then you can request a new one. Once you requested a new one, if you are still running into issues please give us the cloud URL (before you delete too many rules :-) ) so that we can have a look.