fix witness page crash

src/common/pages/witnesses.tsx

@@ -312,7 +312,6 @@ class WitnessesPage extends BaseComponent<PageProps, State> {
       title: _t("witnesses.page-title"),
       description: _t("witnesses.page-description")
     };
-
     const { global, activeUser, location } = this.props;
     let params = location.search.split("=")[1];
     const {
@@ -324,7 +323,8 @@ class WitnessesPage extends BaseComponent<PageProps, State> {
       sort,
       searchText,
       originalWitnesses,
-      spinner
+      spinner,
+      proxyVotes
     } = this.state;
     const extraWitnesses = witnessVotes.filter((w) => !witnesses.find((y) => y.name === w));
     const pageSize = 30;
@@ -360,7 +360,7 @@ class WitnessesPage extends BaseComponent<PageProps, State> {
               return (
                 <Tr
                   key={`${row.name}-${row.rank}${i}`}
-                  className={`${this.state.proxyVotes.includes(row.name) ? "voted-by-voter" : ""}`}
+                  className={`${proxyVotes?.includes(row.name) ? "voted-by-voter" : ""}`}
                 >
                   <Td className="border p-2">
                     <div className="witness-rank">
@@ -447,9 +447,7 @@ class WitnessesPage extends BaseComponent<PageProps, State> {
           {witnesses.map((row, i) => {
             return (
               <span key={`${row.name}${i}`}>
-                <div
-                  className={`${this.state.proxyVotes.includes(row.name) ? "voted-by-voter" : ""}`}
-                >
+                <div className={`${proxyVotes?.includes(row.name) ? "voted-by-voter" : ""}`}>
                   <WitnessCard
                     voted={witnessVotes.includes(row.name)}
                     witness={row.name}