Uncaught Error: Class “WC_PICKUP_STORE” not found

Hi! Thank you for this plugin. We’ve been using it for a couple of years now with almost no issues.

Now we are using a plugin to print shipping labels and it seems to have some issues with WC Pickup Stores and I really don’t know how this should be managed.

Whenever I try to print a label, I get this error from WC Pickup Sotre plugin:

Se ha producido un error del tipo E_ERROR en la línea 287 del archivo /home/customer/www/mywebsite.com/public_html/wp-content/plugins/wc-pickup-store/includes/class-wps-init.php. Mensaje de error: Uncaught Error: Class “WC_PICKUP_STORE” not found in /home/customer/www/smywebsite.com/public_html/wp-content/plugins/wc-pickup-store/includes/class-wps-init.php:287
Stack trace:
#0 /home/customer/www/mywebsite.com/public_html/wp-content/plugins/wc-pickup-store/includes/admin/wps-admin.php(47): wps()
#1 /home/customer/www/mywebsite.com/public_html/wp-content/plugins/wc-pickup-store/includes/wps-functions.php(357): wps_store_get_store_admin(true)
#2 /home/customer/www/mywebsite.com/public_html/wp-content/plugins/wc-pickup-store/includes/wps-functions.php(539): wps_stores_fields(0)
#3 /home/customer/www/mywebsite.com/public_html/wp-includes/class-wp-hook.php(324): wps_wc_order_get_formatted_shipping_address(‘John Doe…’, Array, Object(wf_order))

Do you think I can change something somewhere that may resolve this issue? Any guidance on this would be really appreciated.

Thank you!