ios - Error: unable to create icon mask image from image named "AppIconMask.png" at scale 2.0 -


i getting "___createapplicationiconfromimage_block_invoke: error: unable create icon mask image image named "appiconmask.png" @ scale 2.0"
error while opening pdf viewer using ios cordova phone-gap based application 

 unknown activity items supplied: (     "qlprintpagerenderer: 0x187bc720>",     "uiprintinfo: 0x1c0b51f0>" )

//while executing present view : 

 [self.documentinteractioncontroller presentpreviewanimated:no];

can please tell me why error arose in ios phone-gap based or if facing same issue

this solved me issue. working fine after following below steps

https://discussions.apple.com/thread/6742087?start=0&tstart=0

to troubleshoot issue iphone unresponsive, please follow steps outlined below:

1. if single application not responding or stops responding when opens, can force close.  2. if device unresponsive or if controls aren't working expected, restart device.  3. if device remains unresponsive or not turn on (or power on), reset device.

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