Some project will never answer rest request to have the statistics of one iteration
The URL is as following, where the 1st %s is the project name and the 2nd, the project iteration :
This match with documentation : https://zanata.ci.cloudbees.com/job/zanata-api-site/site/zanata-common-api/rest-api-docs/ns0_translationStatistics.html
You can reproduce this bug using the following code :
Thanks for your help !