http://localhost:8888/login#error=state_mismatch

[shreeya252800]

My Question or Issue

When I click authenticate with spotify button in my application the URL returns this http://localhost:8888/login#error=state_mismatch. 
My spotify uri is this 

• http://localhost:8888/callback
• http://localhost:8888
  Not sure what to do i have attached my code here