Hi sairav,
For technical questions, normally we suggest to use Stack Overflow instead of the google group. The group is mostly used to discuss higher level concepts that cannot fit the Question & Answer style of Stack Overflow (so things like "best practices", "discussing use for certain features", etc.). Since we monitor both stack overflow (under our tags) and the google group, there is no reason to cross post,
Therefore I would suggest going to Stack and asking your question there. I see you already did (there is a question on Stack with your post here verbatim). Your question is not exactly fit for Stack Overflow's format though. You should include a bit more data in there. If I were you, I would edit my question to make it more detailed and self-contained. So let us know where you put the tools sdk and what EXACT error you receive (with the full trace if it's there). What are you using to deploy, what is your gradle build file? I would edit all that information into the Stack Overflow question you have.
Cheers!