Error translating home

Hi there!

I have a problem with translating my home page gives 500 error, but from any other section if you do click to translate perfectly. What type of conflict may have in the home?

turismomarinero.com

Thank you so much! ??

—-
In my other web https://www.hotelmaria.es/en/habitaciones/ when click IN english language gives strange symbols in dictionary

https://www.ads-software.com/plugins/transposh-translation-filter-for-wordpress/