s4mini gallery not responding

[AC Question]

My s4 mini gallery is not responding. I have searched forums and asked Samsung. If you can help me please keep instructions simple, I am technologically challenged!

 

[techchal]

Thank you, I had tried to clear data & cache to no avail. Your suggestion to remove sd card did work, so gallery now works.
Does this mean the sd card is faulty? Can it be fixed or do I need to buy new one?