Skype for Business Mobile app on iPhone iOS device keep crashing after recent updates

Issue: Skype for Business Mobile app on iPhone (iOS) device keep crashing after recent updates (Aug 15, 2017, Version 6.17.0.1).
Symptoms:
User will update notification for Skype for Business Mobile app on iPhone. Like below,

After updating your Skype for Business Mobile app on iPhone device it will keep crashing. (you may notice this after sometime of updates).
Resolution/ Workaround:
There is specific no solution. As a workaround you can delete newly updated Skype for Business mobile app completely and download again and reinstall the same on your iPhone (iOS) device. This time it works.