Error while creating a new sales channel for Klaviyo Export

[anil-dolphin]

I'm referring to this documentation : https://help.klaviyo.com/hc/en-us/articles/13001662470939#h_01HBC3PT82ESVQCM2KR7GGVC80 for integrating Shopware with Klaviyo. As Shopware integration is not available out-of-the-box for Klaviyo, I was creating a catalog feed manually as instructed there.

Shopware version I'm using is 6.6.3.1

I was creating new Sales Channel to Sync the Catalog feed, but while saving the channel I'm getting following Error:

Possible cause:
That error seems related to the field Interval while we select 1 day and save. While saving the sales channel, it calls some API and the value of Interval field is passed as string but it expects it as an integer.

Another issue is, after saving this new sales channel, the field Template always gets unselected. So every-time I have to set it to Klaviyo (XML) before saving anything to this sales channel.

Can someone look into this? Thanks