I have Onestep Checkout extension from Ecomtek.
Checkout page is not loading for me.
Getting below error in system.log
Notice: Undefined index: children in /vendor/magento/module-customer-custom-attributes/Block/Checkout/LayoutProcessor.php on line 62
Can anyone help me to resolve this error. I have raised the issue with support, but no response from them.
Please help me to resolve this error.