Actually fix it this time

app/routes/et-members.tsx

@@ -292,9 +292,7 @@ export default function () {
             <Input
               maxLength={20}
               onBeforeInput={(e) => {
-                const {
-                  data,
-                }: { data?: string } & FormEvent<HTMLInputElement> = e;
+                const data = (e.target as HTMLInputElement).value as string;
 
                 if (!data) return;
 
@@ -302,7 +300,7 @@ export default function () {
                   data.match(/\W/) ||
                   data.length > 20 ||
                   // Need Number pseudo-constructor since matches might be null
-                  Number(data.match(/_/g)?.length) > 1 ||
+                  (data.match(/_/g)?.length || 0) > 1 ||
                   data.startsWith("_")
                 )
                   e.preventDefault();