Exception is raised even when "Continue on Error" is true

I am getting error " Value cannot be null. Parameter name: source" when i am using Get OCR Text Activity with MicrosoftOCR.
Why i am getting this error when i have set Continue on Error = True in Get OCR Text

Hi Smitha,

The continue on error works only if an error occurs during the execution of the activity. If the error is in the inputs (for example if you fail to provide a parameter), you will run into an exception anyway.