Views UI doesn't provide links to expand fieldsets anymore I have moved an entire drupal site to another server. While everything else seems to work fine, I can't quite access collapsed fieldsets in Views UI anymore. It looks like this



All fieldsets (STYLE SETTINGS and so forth) are collapsed. The fieldset label however is not a link. The content of the fieldset exists when I view the HTML of the site. If I remove the CSS

html.js fieldset.collapsed .fieldset-wrapper {
  display: none;
}


I can again see the fieldsets' contents, but the error must be somewhere else. But I don't have any clue where to look for. Anyone has an idea?

I tried to google the error, but it seems all known errors are related to some "Expand all" or "Collapse all" buttons.
This probably means that there is something wrong with JS making collapsible not work.

Is there anything in the JS error log? Check if all JS files are moved and that they are complete. Also check for error 404 for JS files.