Congratulations guys! 

A common Java error is produced by Java Heap Space, you can find here the most common errors of memory produced by Java:

https://sematext.com/blog/java-lang-outofmemoryerror

Good article! Curiously I uploaded a small project to recognize faces using IRIS and Embedded Python. Would be nice to save the 128 points vector generated for each face into the database and save time recalculating it for each comparation with a new face. 

Following the answer of Dmitry you can check this documentation about the Apache configuration to pass file types to the web gateway:

https://docs.intersystems.com/healthconnectlatest/csp/docbook/DocBook.UI...

As you can read in the doc the Apache server has to pass static files if you want to access to the portal manager, maybe that is the problem with your configuration. 

I like it!

Have you tried changing the %Date type of DOB for %String? 

Great article as usual @Dmitry Maslennikov !

Thank you very much! Always a pleasure to be helpful! 

Does it extend %Persistent? 

Could you paste here Contatos.Empresa properties? 

What error do you get?

Have you tried adding "()":

 <assign value='source.{ORCgrp(1).RXE:7.1()}' property='target.{ORCgrp(1).RXE:7.1()}' action='set' />

You have 2 options to return a value from a Method, one is to send by reference an object and instantiate that object inside the method called:

ClassMethod MyMethod(myInput As String, Output myOutput As MyPackage.MyClass) As %Library.Status
{
    set myOuput = ##class(MyPackage.MyClass).%New()
    set myOutput.name = "This is a name"
    
    return $$$OK
}

And invoke it like:

// Invoke method with .. if it belong to the same class or with ##class(classname).method if it doesn't
set tSC = ..MyMethod("One Input", .output)
// Now output has been created and output.name has the value "This is a name"
write output.name

You can see here in the documentation how to pass variables by reference:

https://docs.intersystems.com/irislatest/csp/docbook/DocBook.UI.Page.cls...

When you create a RecordMapper to transform a CSV into an ObjectScript class you can add to the production a Business Process to receive the created object from the mapper, so you can transform it to XML (extending the ObjectScript class from %XML.Adaptor) and save it into a file created ad-hoc when you've received the first mapped row of the CSV (I guess that you can get from the original request the name of the original CSV file to identify the PONumber).

..SecondMethod

You can add after the %Save() command something like this:

set sqlUpdateMoodRecord = "UPDATE MoopRecord SET TotalAmount = 
        CASE WHEN TotalAmount > ? THEN TotalAmount - ? WHEN TotalAmount < ? THEN ? -TotalAmount
            ELSE TotalAmount WHERE %ID = ?"
set statementUpdateMoodRecord = ##class(%SQL.Statement).%New()
set statusUpdateMoodRecord = statementUpdateMoodRecord.%Prepare(sqlUpdateMoodRecord)
if ($$$ISOK(statusUpdateMoodRecord)) {
    set resultSet = statementUpdateMoodRecord.%Execute(pRequest.TotalAmount, 
                        pRequest.TotalAmount, pRequest.TotalAmount, pRequest.TotalAmount,
                        tEntEpicMoopRecord.%ID)
}

Probably that code is not going to work...but the idea is to launch an UPDATE with a condition in the SET.

Sure, try informing target.Serverity.Description.