Exception raised while running fix-alias.ps1 script

When I run the fix alias script for removing invalid characters and spaces I see below exceptions. 

distribution list 

Found Object to Fix: #Gresham Manufacturing Specialists All

New Alias of Object: #GreshamManufacturingSpecialistsAll

Set-DistributionGroup : Missing an argument for parameter 'Alias'. Specify a parameter of type 'System.Object' and try

again.

At line:1 char:112

+ set-distributiongroup 'mchp-main.com/MCHP-MAIN/Distribution List/#Gresham Manufacturing Specialists All' -alias <<<<  #GreshamManufacturingSpecialistsAll

    + CategoryInfo          : InvalidArgument: (:) [Set-DistributionGroup], ParameterBindingException

    + FullyQualifiedErrorId : MissingArgument,Set-DistributionGroup

Contacts

Set-MailContact : Missing an argument for parameter 'Alias'. Specify a parameter of type 'System.Object' and try again.

At line:1 char:70

+ set-MailContact 'mchp-main.com/Domino Users/#MPD Applications' -alias <<<<  #MPDApplications

    + CategoryInfo          : InvalidArgument: (:) [Set-MailContact], ParameterBindingException