MAGENTO 2.1.6 Checkout gif loading error

[TIMMY9]

Hello,

Out of the blue our checkout page which is the standard magento 2.1.6 on STEP 1 loads, however the section with shipping method estimating the shipping fails to load,with the gif icon just going around. 

Nothing has been updated or changed. We are using mageworx shipping suite to create rules to display certain shipping rates, but nothing has been altered.

There are some error displaying upon inspecting soruce on browser