When you add to cart, it only shows Error 500 in popup. In this case, please try disable the option ‘Show cross-selling’ in block cart /SP block cart module.
You can go to admin : Modules >> edit SP Block cart module >> Disable this option:
When you add to cart, it only shows Error 500 in popup. In this case, please try disable the option ‘Show cross-selling’ in block cart /SP block cart module.
You can go to admin : Modules >> edit SP Block cart module >> Disable this option: