When navigating to the points folder under an equip, we get the below error when trying to learn the points. Not sure what it means.

Setup: AX 3.7 with nhaystack module 1.3.0.

haystackLearn(@247188dd-1f68425f, "slot:/Drivers/BacnetNetwork/VAVs/Rtu1/VAV_01/points")

proj::EvalErr: Func failed: haystackLearn(Obj conn,Obj arg); args: (Ref,Str)

haystack::CallErr: java.lang.NoClassDefFoundError [eval:1]

conn::connAppLearnLoad (eval:1)

=== Remote Trace === java.lang.NoClassDefFoundError

at nhaystack.server.TagManager.findUnit(TagManager.java)
at nhaystack.server.TagManager.addPointKindTags(TagManager.java)
at nhaystack.server.TagManager.createPointTags(TagManager.java)
at nhaystack.server.TagManager.createComponentTags(TagManager.java)
at nhaystack.server.Nav.makeCompNavRec(Nav.java)
at nhaystack.server.Nav.onCompNav(Nav.java)
at nhaystack.server.Nav.onNav(Nav.java)
at nhaystack.server.NHServer.onNav(NHServer.java)
at org.projecthaystack.server.HServer.nav(HServer.java)
at org.projecthaystack.server.NavOp.onService(HStdOps.java)
at org.projecthaystack.server.HOp.onService(HOp.java)
at org.projecthaystack.server.HServlet.onService(HServlet.java)
at org.projecthaystack.server.HServlet.doPost(HServlet.java)
at nhaystack.server.BNHaystackServlet.doPost(BNHaystackServlet.java)
at javax.baja.web.BWebServlet.service(BWebServlet.java)
at com.tridium.web.WebProcess.serviceWebServlet(WebProcess.java)
at com.tridium.web.WebProcess.service(WebProcess.java)
at com.tridium.web.SysServlet.service(SysServlet.java)
at javax.servlet.http.HttpServlet.service(HttpServlet.java)
at com.tridium.httpd.ServiceThread.handleRequest(ServiceThread.java)
at com.tridium.httpd.ServiceThread.run(ServiceThread.java)

=== Fantom Trace === proj::EvalErr: Func failed: haystackLearn(Obj conn,Obj arg); args: (Ref,Str)

haystack::CallErr: java.lang.NoClassDefFoundError [eval:1]
proj::FanSysFunc.call (SysFunc.fan:105)
proj::Fn.callLazy (Fn.fan:55)
proj::Call.eval (Call.fan:38)
proj::Context.evalExpr (Context.fan:300)
proj::Context.evalAt (Context.fan:292)
proj::Context.eval (Context.fan:250)
proj::Context.evalToGrid (Context.fan:310)
proj::Context.evalToGrid (Context.fan)
connExt::ConnLib.connLearn (ConnLib.fan:486)
connExt::ConnLib.connAppLearnLoad (ConnLib.fan:463)
java.lang.reflect.Method.invoke (Unknown)
fan.sys.Method.invoke (Method.java:559)
fan.sys.Method$MethodFunc.callList (Method.java:198)
fan.sys.Method.callList (Method.java:138)
proj::FanSysFunc.doCall (SysFunc.fan:112)
proj::Context.doCall (Context.fan:508)
proj::FanSysFunc.call (SysFunc.fan:101)
proj::Fn.callLazy (Fn.fan:55)
proj::Call.eval (Call.fan:38)
proj::TryCatch.eval (Operators.fan:160)
proj::Context.evalExpr (Context.fan:300)
proj::Context.evalAt (Context.fan:292)
proj::Context.eval (Context.fan:250)
proj::ApiMod.evalAllExpr (ApiMod.fan:257)
proj::ApiMod.evalAll (ApiMod.fan:219)
11 More...

Cause:

haystack::CallErr: java.lang.NoClassDefFoundError
  concurrent::Future.get (Future.java:118)
  connExt::ConnActor.learn (ConnActor.fan:64)
  haystackExt::HaystackLib.haystackLearn (HaystackLib.fan:223)
  java.lang.reflect.Method.invoke (Unknown)
  fan.sys.Method.invoke (Method.java:559)
  fan.sys.Method$MethodFunc.callList (Method.java:198)
  fan.sys.Method.callList (Method.java:138)
  proj::FanSysFunc.doCall (SysFunc.fan:112)
  proj::Context.doCall (Context.fan:508)
  proj::FanSysFunc.call (SysFunc.fan:101)
  proj::Fn.callLazy (Fn.fan:55)
  proj::Call.eval (Call.fan:38)
  proj::Context.evalExpr (Context.fan:300)
  proj::Context.evalAt (Context.fan:292)
  proj::Context.eval (Context.fan:250)
  proj::Context.evalToGrid (Context.fan:310)
  proj::Context.evalToGrid (Context.fan)
  connExt::ConnLib.connLearn (ConnLib.fan:486)
  connExt::ConnLib.connAppLearnLoad (ConnLib.fan:463)
  java.lang.reflect.Method.invoke (Unknown)
  fan.sys.Method.invoke (Method.java:559)
  fan.sys.Method$MethodFunc.callList (Method.java:198)
  fan.sys.Method.callList (Method.java:138)
  proj::FanSysFunc.doCall (SysFunc.fan:112)
  proj::Context.doCall (Context.fan:508)
  20 More...
  haystack::CallErr: java.lang.NoClassDefFoundError
    haystack::Client.call (Client.fan:247)
    haystack::Client.call (Client.fan)
    haystackExt::HaystackConn.onLearn (HaystackConn.fan:574)
    connExt::Conn.receive (Conn.fan:322)
    haystackExt::HaystackConn.receive (HaystackConn.fan:44)
    connExt::ConnActor.receive (ConnActor.fan:131)
    concurrent::Actor._dispatch (Actor.java:230)
    concurrent::Actor._work (Actor.java:201)
    concurrent::ThreadPool$Worker.run (ThreadPool.java:262)