add signing service error check

Issue: AAH-2255

Author: jerabekjiri

src/components/copy-collection-to-repository-modal/copy-collection-to-repository-modal.tsx

@@ -124,11 +124,21 @@ export const CopyCollectionToRepositoryModal = (props: IProps) => {
     const signingServiceName =
       context.settings.GALAXY_COLLECTION_SIGNING_SERVICE;
 
-    const signingList = await SigningServiceAPI.list({
-      name: signingServiceName,
-    });
-
-    const signingService = signingList.data.results[0].pulp_href;
+    let signingService = null;
+    try {
+      const signingList = await SigningServiceAPI.list({
+        name: signingServiceName,
+      });
+      signingService = signingList.data.results[0].pulp_href;
+    } catch {
+      setLoading(false);
+      props.addAlert({
+        title: t`Failed to copy collection version.`,
+        variant: 'danger',
+        description: t`Signing service ${signingServiceName} not found`,
+      });
+      return;
+    }
 
     const repoHrefs = repositoryList
       .filter((repo) => selectedRepos.includes(repo.name))

src/components/headers/collection-header.tsx

@@ -197,7 +197,7 @@ export class CollectionHeader extends React.Component<IProps, IState> {
 
     const latestVersion = collection.collection_version.pulp_created;
 
-    const { display_signatures, can_upload_signatures } =
+    const { display_signatures, can_upload_signatures, display_repositories } =
       this.context.featureFlags;
 
     const signedString = () => {
@@ -216,7 +216,6 @@ export class CollectionHeader extends React.Component<IProps, IState> {
           : ''
       }`;
     };
-
     const { collection_version, namespace_metadata: namespace } = collection;
     const { name: collectionName, version } = collection_version;
 
@@ -287,13 +286,15 @@ export class CollectionHeader extends React.Component<IProps, IState> {
       >
         {t`Upload new version`}
       </DropdownItem>,
-      <DropdownItem
-        key='copy-collection-version-to-repository-dropdown'
-        onClick={() => this.copyToRepository(collection)}
-        data-cy='copy-collection-version-to-repository-dropdown'
-      >
-        {t`Copy version ${version} to repositories`}
-      </DropdownItem>,
+      display_repositories && (
+        <DropdownItem
+          key='copy-collection-version-to-repository-dropdown'
+          onClick={() => this.copyToRepository(collection)}
+          data-cy='copy-collection-version-to-repository-dropdown'
+        >
+          {t`Copy version ${version} to repositories`}
+        </DropdownItem>
+      ),
     ].filter(Boolean);
 
     const issueUrl =