Value is getting null in handlerbar

[Avinash Mallick]

We have a processed custom array in BeforeRender() which we are passing to handlerbar.
On iterating over it returns an exception saying--
Rendering engine handlebars
TypeError: Cannot convert undefined or null to object
at Function.keys (<anonymous>)
at xml2jsonUnwrap (evaluate-template-engine-helpers.js

We have logged the object passed for rendering in BeforeRender() and even logged it in handler bar as well but when it is being used with {{#each }} it it throwing error.

Kindly help

[jan_blaha]

Please replicate the problem in playground and share the link here.
https://playground.jsreport.net/