QR code issue

Dear team,

 i am using the following code "https://www.aspsnippets.com/Articles/Dynamically-generate-and-display-QR-code-Image-in-ASPNet.aspx"

when i try to create QR for the following string 

9LKSpY6DAJpoUPUmWXwKzxBfiCvdLfMl5nj954jtNsjgDJY3xxVeAxl/76E/e66M

i got 

9LKSpY6DAJpoUPUmWXwKzxBfiCvdLfMl%nj954jtNsjgDJY3xxVeAxl/76E/e66M

kindly help