Eva, While I appreciate your restoring my site, you also blew away a significant amount of customization in the process. I would have appreciated: A, knowing what happened that caused the error, and B, fixing the error instead of just reinstalling the theme.
Seems your customizations caused the error.
We don’t recommend to modify parent files. Create child theme https://codex.wordpress.org/Child_Themes and make all changes there, so you’ll keep them after theme update.
If you edited woocommerce files in the theme, I saved old folder in wp-content/themes/blanco/woocommerce-old.
Also you can ask your hosting provider support to restore the site from a backup to get back your old site version.
As you can see our default files don’t have such error, so seems some of your modifications were wrong.