Android Question StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1128)

I am developing some code to perform a get which elicits a json response.

On occasions, and more recently it crashes with the above error when executing this line:-

SearchWord = Response.GetString("UTF8")

in
Sub hc_ResponseSuccess(Response AsHttpResponse, TaskId AsInt)

I googled the error but didn't understand the responses in relation to b4a.

any help much appreciated