After filter show a blank page

By the way all my atributes have archive page and all are “select” type.

Also all the slugs use “_” instead of “-“.

You have fatal error when searching going: https://beta.fredzapaterias.com.mx/producto-categoria/damas/alpargata/?swoof=1&pa_color=azafran&really_curr_tax=36-product_cat – enable debug mode and you will find what can be a reason by its text
+
try to disable all plugins except woo+woof and try searching – maybe its plugins conflict …