add additional case for expanded resource list

dashboard/src/components/porter-form/field-components/ResourceList.tsx

@@ -97,7 +97,10 @@ const ResourceList: React.FC<ResourceListField> = (props) => {
           return (
             <ExpandableResource
               key={i}
-              button={props?.settings?.options["resource-button"]}
+              button={
+                props?.settings?.options &&
+                props?.settings?.options["resource-button"]
+              }
               resource={resource}
               isLast={i === resourceList.length - 1}
               roundAllCorners={true}