Go panic

[Forma-DM]

When I get an out of office back the program is panicking..

time="2022-10-18T10:50:06Z" level=info msg="Using config file: /app/config.yml"
time="2022-10-18T10:50:06Z" level=info msg="Using Slack sending profile. Will send messages to #phishing"
time="2022-10-18T10:50:06Z" level=info msg="Server listening on 0.0.0.0:9090/webhook"
time="2022-10-18T10:51:33Z" level=warning msg="unknown status:Email Sent"
2022/10/18 10:51:33 http: panic serving 172.17.0.1:42298: runtime error: invalid memory address or nil pointer dereference
goroutine 5 [running]:
net/http.(*conn).serve.func1()
	/usr/local/go/src/net/http/server.go:1850 +0xbf
panic({0x81bd20, 0xbb2c80})
	/usr/local/go/src/runtime/panic.go:890 +0x262
main.handler({0x941328, 0xc000186000}, 0xc00007c400)
	/root/webhook-phish/main.go:80 +0x5f9
net/http.HandlerFunc.ServeHTTP(0x0?, {0x941328?, 0xc000186000?}, 0x6db854?)
	/usr/local/go/src/net/http/server.go:2109 +0x2f
net/http.serverHandler.ServeHTTP({0x9402c8?}, {0x941328, 0xc000186000}, 0xc00007c400)
	/usr/local/go/src/net/http/server.go:2947 +0x30c
net/http.(*conn).serve(0xc0000000a0, {0x9417c0, 0xc000095d10})
	/usr/local/go/src/net/http/server.go:1991 +0x607
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:3102 +0x4db