What does error inflating widget mean

what does error inflating widget mean error inflating class error inflating class fragment error inflating class unknown error inflating class textview error inflating widget error inflating class android.webkit.webview error inflating class imageview error inflating class spinner error inflating file -3 error inflating widget amazon fire error inflating class layout error inflating error inflating class edittext error inflating class android.widget.textview error inflating class null

Tags: what does error inflating widget mean error inflating class error inflating class fragment error inflating class unknown error inflating class textview error inflating widget error inflating class android.webkit.webview error inflating class imageview error inflating class spinner error inflating file -3 error inflating widget amazon fire error inflating class layout error inflating error inflating class edittext error inflating class android.widget.textview error inflating class null