Merge pull request #766 from blockscout/token-instance/optinal-owner

make owner optional for token instance

types/api/token.ts

@@ -41,7 +41,7 @@ export interface TokenInstance {
   animation_url: string | null;
   external_app_url: string | null;
   metadata: Record<string, unknown> | null;
-  owner: AddressParam;
+  owner: AddressParam | null;
   token: TokenInfo;
 }
 

ui/tokenInstance/TokenInstanceDetails.tsx

@@ -60,6 +60,7 @@ const TokenInstanceDetails = ({ data, scrollRef }: Props) => {
           >
             <TokenSnippet hash={ data.token.address } name={ data.token.name }/>
           </DetailsInfoItem>
+          { data.owner && (
             <DetailsInfoItem
               title="Owner"
               hint="Current owner of this token instance"
@@ -70,6 +71,7 @@ const TokenInstanceDetails = ({ data, scrollRef }: Props) => {
                 <CopyToClipboard text={ data.owner.hash }/>
               </Address>
             </DetailsInfoItem>
+          ) }
           <TokenInstanceCreatorAddress hash={ data.token.address }/>
           <DetailsInfoItem
             title="Token ID"