feat: [IAC-2429]: IACM plugin unauthourized message

plugins/harness-iacm/src/components/WorkspaceList/index.tsx

@@ -18,6 +18,7 @@ import useGetResources from '../../hooks/useGetResources';
 import useProjectUrlSlugEntity from '../../hooks/useProjectUrlEntity';
 import { useResourceSlugFromEntity } from './useResourceSlugFromEntity';
 import ResourceTable from '../ResourceTable';
+import { EmptyState } from '@backstage/core-components';
 
 const useStyles = makeStyles(theme => ({
   container: {
@@ -48,6 +49,12 @@ const useStyles = makeStyles(theme => ({
     alignItems: 'center',
     gap: '5px',
   },
+  noAccess: {
+    padding: theme.spacing(2),
+    display: 'flex',
+
+    textAlign: 'center',
+  },
 }));
 
 export interface Workspace {
@@ -152,6 +159,16 @@ function WorkspaceList() {
       ) : null}
     </Grid>
   );
+  if (state === AsyncStatus.Unauthorized) {
+    return (
+      <EmptyState
+        title="You do not have the permission to view the following IaCM workspaces"
+        missing="info"
+        description="The x-api-key is either missing or incorrect in app-config.yaml under
+        proxy settings"
+      />
+    );
+  }
 
   if (state === AsyncStatus.Init || state === AsyncStatus.Loading) {
     return (