Fix download metadata URL

src/repository/ui/RepositoryBrowser.tsx

@@ -201,7 +201,7 @@ class RepositoryBrowser extends React.Component<IRepositoryBrowserProps, any> {
           <ContentHeaderWithButton isSecondary title={ <FolderCrumbs root={ root } path={ path }/> } buttons={ folder &&
             <span>
               { folder.folder && folder.folder._permissions.manage &&
-                <a href={ `${apiUrl}/api/v1/repository/download/folder-metadata${folderPath}`.replace(/\/\//, '/') }>
+                <a href={ `${apiUrl}/api/v1/repository/download/folder-metadata${folderPath.replace(/\/\//, '/')}` }>
                   <Button key="downloadm" variant="contained">{ t('repository.admin.p.repositoryBrowser.downloadFolderMetadata') }</Button>
                 </a> }
               { folder.folder && folder.folder._permissions.manage &&