Help with Judicial Review!

Hello Seniors,please I want you all to read this decision letter and point out the "errors of law" in it and
tell me how I can convince an Immigration Judge to grant me a quashing order on the Home Office decision.
If possible you can back your findings with Immigration rules/guidance and relevant case laws.

The image can be viewed on this link ;

https://postimg.org/image/z7311yo6z/