Background problem with App

I'm having an issue setting up a temporal event. I keep getting the following error even though I've had this exact code set up present on a data field with success. Am I missing something when implementing within an App.

Error: Illegal Access (Out of Bounds)
Details: Failed invoking <symbol>
Stack:
- onStart() at [line 46]

(line 46 is the onStart() function in the App base)

I register for a temporal event in initialize, and everything runs fine until it executes.

Then I get a System Error

******

I make the call to register in my app base.

class myApp extends Application.AppBase {

    function initialize() {
    ...
        regTempEvent();
    ...
    }
    
...
}

I register here in this function

	//register for temporal events if supported
	function regTempEvent(){
		if (Toybox.System has :ServiceDelegate) {
			canDoBG = true;
			Background.registerForTemporalEvent(new Time.Duration(5*60));
		}
	}

Here is my Background Class

using Toybox.Application as App;
using Toybox.System;
using Toybox.Background;
using Toybox.Communications;

(:background)
class BgServiceDelegate extends System.ServiceDelegate {
	
	function initialize() {
		System.ServiceDelegate.initialize();
	}
	
	// callback function
	function onReceive(responseCode, data) {
		
		if (data == null) {
			data = {};
		}
		data["responseCode"] = responseCode;
		Background.exit(data);
	}
	
	function makeRequest() {
		if (Communications has :makeWebRequest) { 

			var url = Lang.format("url stuff");

			var options = {
				:method => Communications.HTTP_REQUEST_METHOD_GET,
				:responseType => Communications.HTTP_RESPONSE_CONTENT_TYPE_JSON
			};

			Communications.makeWebRequest(
				url,
				{},
				options,
				method(:onReceive)
			);
	
		}
	}

	function onTemporalEvent() { 	
		makeRequest();
	}
}