update go mod, fix possible typecasting issues

app/utils.go

@@ -65,3 +65,11 @@ func AnyPrefixes(s string, prefixes []string) string {
 
 	return ""
 }
+
+func SafeUint64(i int) uint64 {
+	if i < 0 {
+		log.Printf("Tried to cast %d to uint64", i)
+		return 0
+	}
+	return uint64(i)
+}