getting the issue when executing puppet device --debug

[sanjeevrohila]

Debug: /File[/adshome/srohila/.puppetlabs/opt/puppet/cache/devices/labnexus/state/graphs]: Adding autorequire relationship with File[/adshome/srohila/.puppetlabs/opt/puppet/cache/devices/labnexus/state]
Debug: /File[/adshome/srohila/.puppetlabs/opt/puppet/cache/devices/labnexus/facts.d]: Adding autorequire relationship with File[/adshome/srohila/.puppetlabs/opt/puppet/cache/devices/labnexus]
Debug: Finishing transaction 14275360
Debug: Evicting cache entry for environment 'production'
Debug: Caching environment 'production' (ttl = 0 sec)
Error: Can't load cisco for labnexus: undefined method `default_prompt=' for nil:NilClass

I am getting the error above, could you please help me working with this module ?

Regards,
Sanjeev