Powershell error with multiline command call - Missing expression after unary operator '-'

This turned out to be caused by a space being present after the backtick (`) character.

So,

Create-WebSite -Name $targetWebSite ` <- SPACE HERE
    -Location $targetWebSiteDir

became

Create-WebSite -Name $targetWebSite `<- NO SPACE
    -Location $targetWebSiteDir

Once I removed the space everything ran correctly.

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