I have a timer subscription that every minute runs a service that calls
Suddenly the system started to give an error with this function. On the Application Log I read
Wrapped java.lang.Exception: Unable to query implementing things : null Cause: Unable to query implementing things : null
this happened only in one ThingTemplate, with another ThingTemplate this service was instead working.
Noone was developing or connected into the system.
On Apache there is only such request, just 1 minute after the error started, nothing else until some hours
127.0.0.1 - - [22/May/2017:09:05:50 +0200] "GET /Thingworx/WS HTTP/1.1" 101 -
I just solved making a insignificant modification to such template and saving it.
I also removed the modification and saved again, and it continued to work.
So seems that this template was "broken" ... and saving it recovered its state
I have this setup
Server version: Apache Tomcat/8.0.33
Server built: Mar 18 2016 20:31:49 UTC
Server number: 184.108.40.206
OS Name: Windows Server 2012 R2
OS Version: 6.3
JVM Version: 1.8.0_91-b14
Windows is running in a VMWare VM
note that few seconds before the error started, the system time was updated by vmware (seen on windows event viewer) , just synced of about 1 minute. This happen also other times but with no apparent issues ... May this cause troubles with internal timings ?
Has anyone an idea why this happened ??
Hi Ivano Guerra,
Did this issue persist through a restart of ThingWorx?
I only found one other case that reported the same error as you, and the root cause were Ghost Entities (https://support.ptc.com/appserver/cs/view/solution.jsp?n=CS198580). It's possible that the insignificant modification you made was enough to either remove a ghost entity, or make it irrelevant.
I've had this happen in TWX 7.3. It was a bug with TWX that was fixed in a later dot release. There was nothing that we could find which indicated what explicitly caused this to happen.
i have the same issue in 7.3.2 ( ThingTemplates["TemplateName"].QueryImplementingThingsWithData(params))
any news about this ?