SQL Powershell Error: Invoke-Sqlcmd : The term 'Invoke-Sqlcmd' is not recognized as the name of a cmdlet

When I try to run a powershell script I get the following error:

Invoke-Sqlcmd : The term 'Invoke-Sqlcmd' is not recognized as the name of a cmdlet, function, script file, or operable program.

So in Powershell I ran the following:

install-module sqlserver
update-module sqlserverimport-module sqlserver

This all runs fine. If I then run Invoke-Sqlcmd I get the above error.

If I run this command:

Get-Command-Module sqlserver

I get this result:

CommandTypeNameVersionSource----------------------------AliasDecode-SqlName21.0.17224 sqlserverAliasEncode-SqlName21.0.17224 sqlserverFunction        SQLSERVER:21.0.17224 sqlserver

Any ideas on what else I should try?

I have SQLServer 2014 and Powershell Version 5

I have also tried installing: powershelltools.msi, downloaded as part of the SQL Server 2014 Feature pack.