Deploy error while using baked artifact

I am pretty new to spinnaker and was trying to set up a sample pipeline using the baking template feature. Have downloaded an Nginx chart template from (https://github.com/bitnami/charts/tree/master/bitnami/nginx) and created a chart.

Upon the execution of the pipeline, I am able to bake the chart successfully however the deployment to the Kubernates is getting failed with the below error.

Exception ( Deploy Manifest )

java.lang.IllegalArgumentException: Cannot deserialize instance of java.util.ArrayList out of VALUE_STRING token at [Source: UNKNOWN; line: -1, column: -1]

If any is familiar to this issue, please let me know how I get this resolved.

Spinnaker apo version : 1.9.1
Spinnaker char version (spinnaker-1.1.6)

Thanks in advance.
Bipin

I am having the same issue when using deploy manifest (bitbucket artifact)
.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of java.util.ArrayList out of VALUE_STRING token
I think it has to do with webpage returning string instead of json.
Any solution please