This issue still persists using TAC v6.4.1 and VisualSVN.
I can't create a new project because somehow the repository path goes wrong in the same way as bhavesh25shah experienced.
In Visual SVN I can see a folder with the wrong name is created by Talend.
Was this issue ever resolved back in 2015?
I was able to solve the issue with the help of Talend support:
In the TAC, under Settings-Configuration-Svn-"Server location url", the url was: https://hostname:443/svn/reponame
A port number is not allowed in this url, the issue was fixed by changing it to: https://hostname/svn/reponame