Can't locate Email/Send.pm

This shouldn't be a surprise since you said it didn't get installed due to test failures.

When i am trying to install the modules I get the another Error, Which is "'YAML' not installed, will not store persistent state"

Ignore this warning. cpan uses YAML if available, but it can live without it.

After this a few tests fail and the Modules dont get installed

These failures are not related to the YAML warning. These are the problems you should be investigating.