API to unprotect a branch giving 404 Not Found error

Summary

I am able to protect branch but not able to unprotect

Steps to reproduce

Protect (Working). curl -s --request POST--header "PRIVATE-TOKEN: " https:///api/v4/projects/:id/protected_branches?name= Unprotect ({"error":"404 Not Found"}) (How one can reproduce the issue - this is very important) curl -s --request DELETE--header "PRIVATE-TOKEN: " https:///api/v4/projects/:id/protected_branches?name=

Example Project

What is the current bug behavior?

(What actually happens) {"error":"404 Not Found"}

What is the expected correct behavior?

Able to unprotect branch (What you should see instead) {"error":"404 Not Found"}

Relevant logs and/or screenshots

Output of checks

Results of GitLab environment info

Expand for output related to GitLab environment info

(For installations with omnibus-gitlab package run and paste the output of:
sudo gitlab-rake gitlab:env:info)
(For installations from source run and paste the output of:
sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production)

Results of GitLab application Check

Expand for output related to the GitLab application check

(For installations with omnibus-gitlab package run and paste the output of:
sudo gitlab-rake gitlab:check SANITIZE=true)
(For installations from source run and paste the output of:
sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production SANITIZE=true)
(we will only investigate if the tests are passing)

Possible fixes

(If you can, link to the line of code that might be responsible for the problem)