Getting 'Cannot validate input uid' error while creating a new application

Issue

• Sometime gear creation causes below error :

DEBUG: rhc app create -k -a 'testapp' -t 'php-5.3' 
Application Options
-------------------
  Namespace:  mynamespace
  Cartridges: php-5.3
  Gear Size:  default
  Scaling:    no

Creating application 'testapp' ... 
Unable to complete the requested operation due to: Cannot validate input uid: value should be a number.