Convert server process error to string before writing to stream

Author: Dahlgren

lib/logs.js

@@ -164,8 +164,8 @@ Logs.prototype.logServerProcess = function (serverProcess, prefix, suffix) {
   })
 
   serverProcess.on('error', function (err) {
-    if (logStream) {
-      logStream.write(err)
+    if (logStream && err) {
+      logStream.write(err.toString())
     }
   })
 }