Hello Sir,
I have crux at finding root of issues and solve them, have good amount of experience on javascripts and wordpress. First debugging via crome network tab will help me get the missing files, also inspecting it from my mobile (nexus5), and checking its log on my laptop will help me compare js files getting loaded. And then will look into wordpress how it changes js loads, mostly it will be related to header file, but having the link will help me find the root cause. Thanks looking forward to your reply.