roscore works normal from command line but it does not work over ssh

edit

I just recently installed ros-indigo on raspberry pi. The roscore works fine when I run it from the raspberry pi itself. But when i try to run it from my laptop through ssh i get the following error:

terminate called after throwing an instance of 'std::runtime_error' what(): locale::facet::_S_create_c_locale name not valid

After termination of process rosout it restarts over and over again.

Btw sorry for my bad English. It is not my native.