fix

Author: Manjusha.S

app/code/Magento/Checkout/Test/Mftf/Test/StorefrontCheckCustomerInfoOnOrderPageCreatedByGuestTest.xml

@@ -21,6 +21,7 @@
         </annotations>
 
         <before>
+            <magentoCLI command="config:set {{EnableFlatRateConfigData.path}} {{EnableFlatRateConfigData.value}}" stepKey="enableFlatRate"/>
             <createData entity="_defaultCategory" stepKey="createCategory"/>
             <createData entity="_defaultProduct" stepKey="createProduct">
                 <requiredEntity createDataKey="createCategory"/>

app/code/Magento/Sales/Test/Mftf/Test/AdminCheckingCreditMemoUpdateTotalsTest.xml

@@ -20,6 +20,8 @@
             <group value="sales"/>
         </annotations>
         <before>
+            <magentoCLI command="config:set {{EnableFlatRateConfigData.path}} {{EnableFlatRateConfigData.value}}" stepKey="enableFlatRate"/>
+
             <createData entity="SimpleProduct2" stepKey="createSimpleProduct"/>
 
             <createData entity="Simple_US_CA_Customer" stepKey="createCustomer"/>