I’ve identified that three of your SP Page Builder pages are using the Articles Slider override addon, which is causing the current issue with Smart Search indexing.
Please delete the Articles Slider override addon from the following pages (If no need these Test and test-articles-slider delete thse pages and in service page remove this addon block only):
- Test
- test-articles-slider
- Service
Once removed, the error should no longer occur during indexing.
Let us know once this is done or if you need further assistance.
Thanks,