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here was an unexpected error in your org which is preventing this assessment check from completing: System.NullPointerException: Attempt to de-reference a null object

何で正解を得たら質問ごと消すんだろう。自分勝手な人が多い。

Service Cloud Agent Productivity Use All the Service Console Productivity Tools Together

Service Cloud Agent Productivity Use All the Service Console Productivity Tools Together

I had the same issue. It was resolved by deleting email from case 1002, which had a null message. (I had only updated the subject, not the body.) Next, I updated the macro to include simple HTML in the body and repeated the task of sending the email using the macro. Upon checking, the challenge was complete.

マクロが使えないらしい

The Macro instration can't be used in this view. Update the Macro