[Bug] When CU RPC call errors, different behavior is shown on the Block page and the transaction signature page. #662
Description
Problem
On the block page, when CU RPC call errors out we just show an unknown indicator on the page. However, we just don't show the line item on the signature page if the CU RPC call errors out.
Solution
The behavior should be the same across the pages instead of different. Ideally we do not show the unknown as that is confusing to the visitor.