Error after migration

Part of error message
  • Call to undefined function…
  • Use of undefined constant…
  • Empty space, where the sliders should be after updating the Smart Slider.
  • Empty space, where the sliders should be after updating your Joomla.
  • Empty space, where the sliders should be after moving the website to another location.
Solution

If there is an error message, which says that the Smart Slider calls for a code part that is not defined, then probably you have some missing files, and you should reinstall the Smart Slider. After that go to the Global SettingsCache, and click on Clear cache, to make your sliders use the correct code.