BOI with Webpage

We have an intranet page we'd like to write to Sage with via BOI.  For years we have used BOI in .NET desktop applications (using a dll containing 'wrapper' classes written in VB.NET) and its worked great.  However when attempting to use it from a web page (.NET CORE), despite being able to successfully create the Providex.Script object, the following line, where 'oScript' is the ProvideXscript object:

oScript.Init([Sage home directory])

throws the following exception:

Public member 'Init' on type 'IScript' not found

This is obviously something related to the fact that its being run via webpage, but I was just curious if anyone else has come across this and had any potential fixes?  Thanks in advance for any info you can provide!