Fix isBase64Encoded type assertion in ServeHTTPFunctions if value is nil

handler_utils/debug.go

@@ -79,7 +79,7 @@ func ServeHTTPFunctions(ctx context.Context, lambdaHandler lambda.Handler, w htt
 
 	w.WriteHeader(int(response["statusCode"].(float64)))
 
-	if response["isBase64Encoded"].(bool) {
+	if isBase64Encoded, ok := response["isBase64Encoded"]; ok && isBase64Encoded.(bool) {
 		decoded, err := base64.StdEncoding.DecodeString(response["body"].(string))
 		if err != nil {
 			panic(err)