fixed error logging

packages/api/src/utility/childProcessChecker.js

@@ -8,11 +8,11 @@ function childProcessChecker() {
   setInterval(() => {
     try {
       process.send({ msgtype: 'ping', counter: counter++ });
-    } catch (ex) {
+    } catch (err) {
       // This will come once parent dies.
       // One way can be to check for error code ERR_IPC_CHANNEL_CLOSED
       //     and call process.exit()
-      logger.error('parent died', ex);
+      logger.error({ err }, 'parent died');
       process.exit(1);
     }
   }, 1000);