Assembly {0} does not contain a Web resource with name {0}

Assembly 'ABC, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' contains a Web resource with name 'PasswordExtenderBehavior.js', but does not contain an embedded resource with name 'PasswordExtenderBehavior.js'.

for this we need to select "PasswordExtenderBehavior.js" right click and go to properties select BUILD Action-> Embedded Resource