Why do I always prompt the "Request-token"?


Hey,I’m a beginner and developing the “Sign-in” by twitter.i have applied for the id and debugging the code.when getting the “Request-token”, It always prompted “Failed to validate oauth signature and token
”.I want to know do u need to audit the id before you can use the debugging?Or,because i didn’t set the permission to my app.
In conclusion,It has been verification isn’t successful,and i don’t know is that,so,If the development of a document, u can send
send me a copy of it,Much appreciate!