no such public library awslambda.class.nut
no such public library hts221.device.lib.nut
Hmm, flagging this up, Possibly the latest versions weren't pushed (these are ones with recent updates).
Both #require "AWSLambda.agent.lib.nut:1.0.0" and #require "HTS221.device.lib.nut:2.0.0" should be available. Please double-check.
Both libraries were pending because of the internal review. Documentation will be published at the Dev Center shortly. Meanwhile please refer to GitHub: https://github.com/electricimp/AWSLambda and https://github.com/electricimp/HTS221 for more details.