Token transfer: check that block exists before retrieving timestamp

CHANGELOG.md

@@ -6,6 +6,7 @@
 - [#3256](https://github.com/poanetwork/blockscout/pull/3256) - Fix for invisible validator address at block page and wrong alert text color at xDai
 
 ### Chore
+- [#3258](https://github.com/poanetwork/blockscout/pull/3258) - Token transfer: check that block exists before retrieving timestamp
 
 
 ## 3.3.2-beta

apps/block_scout_web/lib/block_scout_web/templates/tokens/transfer/_token_transfer.html.eex

@@ -58,7 +58,7 @@
           to: block_path(BlockScoutWeb.Endpoint, :show, @token_transfer.block_number)
         ) %>
       </span>
-      <span class="mr-2 mr-md-0 order-2" data-from-now="<%= @token_transfer.transaction.block.timestamp %>"></span>
+      <span class="mr-2 mr-md-0 order-2" data-from-now="<%= @token_transfer.transaction.block && @token_transfer.transaction.block.timestamp %>"></span>
     </div>
   </div>
 </div>