Indeed, the problem was caused because the address to which it is going to connect is variable, so the component is not configured with the Server or URL parameters.

I've solved it by the following way:

set ..Adapter.HTTPServer = pRequest.Url
Set URL = pRequest.Url_"/search"
set tHttpResponse = ##class(%Net.HttpResponse).%New()
set tSC = ..Adapter.SendFormDataArray(.tHttpResponse,"POST",tHttpRequest,,,URL)

if $$$ISERR(tSC) && (tHttpResponse="") $$$ThrowStatus(tSC)

// Check what is the status code
set content = ""
while (tHttpResponse.Data.AtEnd = 0) { 
    set content = content_tHttpResponse.Data.Read() 

do pResponse.%JSONImport(content)
set pResponse.StatusCode = tHttpResponse.StatusCode

Kurro Lopez

Thanks Robert but it wasn't a firewall problem.

The problem was due the instalation didn't compile the code correctly. It doesn't get the version of ISC as expected.

I'm using the version WebTerminal-v4.9.3, in the line 1507 there is a initialization of the parameter iscProductVersion

<Parameter name="iscProductVersion">
In older Cache versions, method "GetISCProduct" does not exists</Description>
        ##class(%Dictionary.CompiledMethod).IDKEYExists("%SYSTEM.Version", "GetISCProduct"),
        1: $CLASSMETHOD("%SYSTEM.Version", "GetISCProduct"),
        : 2

Later, in line 1611, it checks what is the version to set the role required:

set requiredRole = $case(..#iscProductVersion >= 4, 1: "%DB_IRISSYS", : "%DB_CACHESYS")

But, if I check what is my version, the answer is 3, instead of 4, so it was trying to set %DB_CACHESYS instead of %DB_IRISSYS, so the compilation didn't end.

w ##class(%SYSTEM.Version).GetISCProduct() 

Then, I've modified the file and change the comparison  ..#iscProductVersion to check if is equal or upper than 3, and it works.

In the line 1730, there is other comparison to set the dbPrefix, so I've modified this line also.

set dbPrefix = $case(..#iscProductVersion >= 3, 1: "IRIS", : "CACHE")

Now, I have the Webterminal worning fine.

Note: I'm using IRIS for Windows (x86-64) 2021.1 (Build 215U) Wed Jun 9 2021 09:39:22 EDT

Best regards,
Francisco Lopez