Webhook to Discord Channel not functioning through Live Launch Wizard

I haven't done any integration with Discord, but does manually sending POST requests to the channel work? That may help narrow down where the issue is.

I have this working in mine. I have the below set up in a class 
 

def GetPortfolioStatisticsPayload(self):

        portfolio_value = self.algo.Portfolio.TotalPortfolioValue
        holdings_value = self.algo.Portfolio.TotalHoldingsValue
        cash = self.algo.Portfolio.Cash
        leverage = holdings_value / portfolio_value if portfolio_value > 0 else 0
        unrealised_profit = self.algo.Portfolio.TotalUnrealizedProfit
        holdings = ''

        portfolio = self.algo.Portfolio.Values
        orderedPortfolio = sorted(portfolio, key=lambda x: x.Quantity * x.Price, reverse=True)

        for sym in orderedPortfolio:
            if sym.Invested:
                value = "${:,.2f}".format(sym.Quantity * sym.Price)
                if len(holdings) > 0:
                    holdings += f"\n{sym.Symbol.Value} - {value}"
                else:
                    holdings += f"{sym.Symbol.Value} - {value}"

        return {
            "embeds": [
                {
                    "title": "Portfolio Statistics",
                    "description": "A breakdown of the current Portfolio Statistics",
                    "fields": [
                        {
                            "name": "Portfolio Value",
                            "value": "${:,.0f}".format(portfolio_value)
                        },
                        {
                            "name": "Holdings Value",
                            "value": "${:,.0f}".format(holdings_value),
                            "inline": True
                        },
                        {
                            "name": "Cash Balance",
                            "value": "${:,.0f}".format(cash),
                            "inline": True
                        },
                        {
                            "name": "Leverage",
                            "value": "{:,.2f}x".format(leverage),
                        },
                        {
                            "name": "Unrealised Profit/Loss",
                            "value": "${:,.0f}".format(unrealised_profit)
                        },
                        {
                            "name": "Holdings",
                            "value": holdings
                        }
                    ]
                }
            ]
        }

def SendDiscordMessage(self, payload):
	discordUrl = "WEBHOOK_URL"
	self.algo.Notify.Web(discordUrl, json.dumps(payload))
	
def SendPortfolioStatistics(self):

    self.SendDiscordMessage(self.GetPortfolioStatisticsPayload())