Globally uncaught exception when JON dashboard is displayed

Issue

• Receiving this error:

  Globally uncaught exception
  Detail: com.google.gwt.core.client.JavaScriptException:(TypeError) 
   stack: $getJsonMetrics@http://jboss.example.com:7080/coregui/org.rhq.coregui.CoreGUI/2A77A24F951460101B986D98DA8577D9.cache.html:94373:68
  getJsonMetrics@http://jboss.example.com:7080/coregui/org.rhq.coregui.CoreGUI/2A77A24F951460101B986D98DA8577D9.cache.html:93893:25
  $drawJsniChart_0@http://jboss.example.com:7080/coregui/org.rhq.coregui.CoreGUI/2A77A24F951460101B986D98DA8577D9.cache.html:94767:135
  run_26@http://jboss.example.com:7080/coregui/org.rhq.coregui.CoreGUI/2A77A24F951460101B986D98DA8577D9.cache.html:109726:19
  fire_1@http://jboss.example.com:7080/coregui/org.rhq.coregui.CoreGUI/2A77A24F951460101B986D98DA8577D9.cache.html:1657:11
  http://jboss.example.com:7080/coregui/org.rhq.coregui.CoreGUI/2A77A24F951460101B986D98DA8577D9.cache.html:1649:15
  apply@http://jboss.example.com:7080/coregui/org.rhq.coregui.CoreGUI/2A77A24F951460101B986D98DA8577D9.cache.html:527:26
  entry0@http://jboss.example.com:7080/coregui/org.rhq.coregui.CoreGUI/2A77A24F951460101B986D98DA8577D9.cache.html:565:21
  http://jboss.example.com:7080/coregui/org.rhq.coregui.CoreGUI/2A77A24F951460101B986D98DA8577D9.cache.html:550:20
   line: 94373
   sourceURL: http://jboss.example.com:7080/coregui/org.rhq.coregui.CoreGUI/2A77A24F951460101B986D98DA8577D9.cache.html: 'null' is not an object (evaluating 'lowestValue.lowValue')
     at Unknown.anonymous(getJsonMetrics@http://jboss.example.com:7080/coregui/org.rhq.coregui.CoreGUI/2A77A24F951460101B986D98DA8577D9.cache.html@25)
     at Unknown.anonymous($drawJsniChart_0@http://jboss.example.com:7080/coregui/org.rhq.coregui.CoreGUI/2A77A24F951460101B986D98DA8577D9.cache.html@135)
     at Unknown.anonymous(run_26@http://jboss.example.com:7080/coregui/org.rhq.coregui.CoreGUI/2A77A24F951460101B986D98DA8577D9.cache.html@19)
     at Unknown.anonymous(fire_1@http://jboss.example.com:7080/coregui/org.rhq.coregui.CoreGUI/2A77A24F951460101B986D98DA8577D9.cache.html@11)
     at Unknown.anonymous(http://jboss.example.com:7080/coregui/org.rhq.coregui.CoreGUI/2A77A24F951460101B986D98DA8577D9.cache.html@15)
     at Unknown.anonymous(apply@http://jboss.example.com:7080/coregui/org.rhq.coregui.CoreGUI/2A77A24F951460101B986D98DA8577D9.cache.html@26)
     at Unknown.anonymous(entry0@http://jboss.example.com:7080/coregui/org.rhq.coregui.CoreGUI/2A77A24F951460101B986D98DA8577D9.cache.html@21)
     at Unknown.anonymous(http://jboss.example.com:7080/coregui/org.rhq.coregui.CoreGUI/2A77A24F951460101B986D98DA8577D9.cache.html@20)
  

• Applied patch and received an error

• Dashboard causes error