events-monitor: Send email even when the additional data fails

events-monitor/Dockerfile

@@ -1,5 +1,5 @@
 # Accept the Go version for the image to be set as a build argument.
-ARG GO_VERSION=1.18
+ARG GO_VERSION=1.19
 
 # First stage: build the executable.
 FROM golang:${GO_VERSION}-alpine AS builder

events-monitor/main.go

@@ -222,12 +222,12 @@ func monitorEvents(ctx context.Context, sender emailSender) error {
 			forkchoiceDump, err := getForkchoiceDump(monitorFlags.httpEndpoint)
 			if err != nil {
 				log.WithError(err).Error("Could not get forkchoice dump data")
-				continue
+				forkchoiceDump = []byte("Could not get forkchoice dump data") // Send something to avoid empty email.
 			}
 			evData, err := json.Marshal(ev)
 			if err != nil {
-				log.WithError(err).Error("Could marshal event")
-				continue
+				log.WithError(err).Error("Could not marshal event")
+				evData = []byte("Could not marshal event") // Send error as data.
 			}
 			if err := sendJSONEmail(sender, "chain_reorg", evData, forkchoiceDump); err != nil {
 				log.WithError(err).Error("Could not send chain_reorg event as email attachment")