Zilliqa: "Verified contracts" page crashes on desktop (#2393)

Fixes #2389

types/api/contracts.ts

@@ -5,7 +5,7 @@ export interface VerifiedContract {
   address: AddressParam;
   certified?: boolean;
   coin_balance: string;
-  compiler_version: string;
+  compiler_version: string | null;
   language: 'vyper' | 'yul' | 'solidity';
   has_constructor_args: boolean;
   optimization_enabled: boolean;

ui/verifiedContracts/VerifiedContractsTableItem.tsx

@@ -66,11 +66,13 @@ const VerifiedContractsTableItem = ({ data, isLoading }: Props) => {
       <Td>
         <Flex flexWrap="wrap" columnGap={ 2 }>
           <Skeleton isLoaded={ !isLoading } textTransform="capitalize" my={ 1 }>{ data.language }</Skeleton>
+          { data.compiler_version && (
             <Skeleton isLoaded={ !isLoading } color="text_secondary" wordBreak="break-all" my={ 1 } cursor="pointer">
               <Tooltip label={ data.compiler_version }>
                 <span>{ data.compiler_version.split('+')[0] }</span>
               </Tooltip>
             </Skeleton>
+          ) }
         </Flex>
         { data.zk_compiler_version && (
           <Flex flexWrap="wrap" columnGap={ 2 } my={ 1 }>