Unable to get property 'showFps' of undefined or null reference

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Message: Unable to get property 'prototype' of undefined or null reference

File: http://www.callofwar.com/ww2-dev/js/main-built-min.js:73090:3

Trace: TypeError: Unable to get property 'prototype' of undefined or null reference

at Anonymous function (http://www.callofwar.com/ww2-dev/js/main-built-min.js?bust=1467913764:73090:3)

at req.execCb (http://www.callofwar.com/ww2-dev/js/require.js?bust=1467913763:1767:9)

at execManager (http://www.callofwar.com/ww2-dev/js/require.js?bust=1467913763:437:21)

at main (http://www.callofwar.com/ww2-dev/js/require.js?bust=1467913763:840:17)

at callDefMain (http://www.callofwar.com/ww2-dev/js/require.js?bust=1467913763:851:13)

at context.completeLoad (http://www.callofwar.com/ww2-dev/js/require.js?bust=1467913763:1420:25)

at req.onScriptLoad (http://www.callofwar.com/ww2-dev/js/require.js?bust=1467913763:1814:13)

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Message: Unable to get property 'showFps' of undefined or null reference

File: http://www.callofwar.com/ww2-dev/js/main-built-min.js:55667:5

Trace: TypeError: Unable to get property 'showFps' of undefined or null reference

at hup.Stats.prototype.init (http://www.callofwar.com/ww2-dev/js/main-built-min.js?bust=1467913764:55667:5)