Improve error message when NetworkPortal restore fails
Improve error message when NetworkPortal restore fails

Also print the original exception message.

Signed-off-by: Andy Grover <b7d524d2f5cc5aebadb6b92b08d3ab26911cde33@redhat.com>

agrover/rtslib-fb,mikenawrocki/rtslib-fb,cvubrugier/rtslib-fb,mikenawrocki/rtslib-fb