Error during checkout with Magento_Salesrule

[sydekumf]

Preconditions

During checkout I get the following error:
PHP Fatal error: Uncaught Error: Call to a member function setDiscounts() on array in vendor/magento/module-sales-rule/Model/Quote/Discount.php:122

Magento Version : Commerce 2.3.5-p1
ElasticSuite for Retailer Version : 2.0.0

Environment : Default

Third party modules : No, Magento Vanilla installation

Steps to reproduce

1. Create a retailer in the backend
2. Create a retailer offer in the backend
3. Add product to cart and proceed to checkout
4. Select retailer in checkout => Error in log file

Expected result

1. Checkout should be possible without errors

Actual result

1. Error in log file
   PHP Fatal error: Uncaught Error: Call to a member function setDiscounts() on array in vendor/magento/module-sales-rule/Model/Quote/Discount.php:122