Error while submitting the answers

[sakshampruthi]

When submit button is clicked at the end of the survey it gives the following error:

com.android.volley.ParseError: org.json.JSONException: Value <!doctype of type java.lang.String cannot be converted to JSONObject

[nmullaney]

Does this happen in the example app?

[XinLvLv]

It happens in the example app