Preconditions (*)

1. Magento 2.4.2
2. B2B 1.3.1

Steps to reproduce (*)

Configure "The In-Store delivery" method.

1. Geolocation:
   a.)install geolocation bin/magento inventory-geonames:import us (if USA only);
   b) set configuration Store → Configuration → Catalog → Inventory → Distance Provider for Distance Based SSA → Provider: Offline Calculation.
2. Stock:
   a) Add two or more sources at Store → Source → Add New Source.
   Important: set real American Latitude and Longitude. I searched it on google maps.
   b) Create stock and add to it our sources Store → Source → Add New Stock. Set Main Website to the sales channels.
3. Enable The In-Store delivery shipping method.
4. Go to the product, there is added source tab:
   a) remove the default source.
   b) Assign already created sources.
   c) Add qty and set available stock status.
5. Add this product(one) to the cart and go on checkout.

Expected result (*)

1. Checkout shipping step loads well.

Actual result (*)

On first (only first) page-load have failed in the console and not closed loader.