i find this error when i deploy the architecture , even i choose only ubuntu 14

[#1]

An internal system exception occurred: Base url http://public-repo-1.hortonworks.com/HDP/sles12/2.x/updates/2.5.3.0 is already defined for another repository version. Setting up base urls that contain the same versions of components will cause stack upgrade to fail.

[#2]

Go to your apt sources directory and remove one of the two entries for HDP. Then run

sudo apt-get clean all