Fix API_Controller bug when receiving empty JSON request body
Fix API_Controller bug when receiving empty JSON request body

razorlegacy/ci_bootstrap_3,razorlegacy/ci_bootstrap_3,waifung0207/ci_bootstrap_3_demo,facundoruiz/ci_bootstrap_3,razorlegacy/ci_bootstrap_3,waifung0207/ci_bootstrap_3_demo,waifung0207/ci_bootstrap_3,waifung0207/ci_bootstrap_3_demo,facundoruiz/ci_bootstrap_3,waifung0207/ci_bootstrap_3,facundoruiz/ci_bootstrap_3,waifung0207/ci_bootstrap_3,razorlegacy/ci_bootstrap_3,waifung0207/ci_bootstrap_3,facundoruiz/ci_bootstrap_3,waifung0207/ci_bootstrap_3_demo