Wt

bij het switchen tussen 2 aktieve widgets treedt er een 'internal Error' op:
Wt versie: 4.1.0 (ik heb 4.5.0 geeprobeerd, zelfde fout)
[2020-Dec-15 13:51:47.095] 52112 - [info] "WebRequest: took 774.57 ms"
192.168.1.241 - - [2020-Dec-15 13:51:47.333] "POST /ManagementSystem?wtd=4yeKjGMJjJTNE5rx HTTP/1.1" 200 1506
[2020-Dec-15 13:51:47.333] 52112 - [info] "WebRequest: took 237.087 ms"
[2020-Dec-15 13:51:47.407] 52112 [/ManagementSystem 4yeKjGMJjJTNE5rx] [error] "WApplication: JavaScript error: {""exception_description"":""Cannot read property 'className' of null"",""exception_js"":""Wt.p.response(704594175);{Wt4_1_0.removeCssRule('#ohdqy37 .Wt-tv-c3');Wt4_1_0.removeCssRule('#ohdqy37 li .Wt-tv-c4');{ var d= Wt4_1_0.getCssRule('#ohdqy37 .headerrh');if(d){}}Wt4_1_0.addCss('#ohdqy37 .Wt-tv-c4','');\nWt4_1_0.addCss('#ohdqy37 li .Wt-tv-c4','width: auto;text-overflow: ellipsis;overflow: hidden');\nvar j758=Wt4_1_0.$('ohdqy2z');\nWt4_1_0.setHtml(j758, '');\nvar j759=Wt4_1_0.$('ohdqy31');\nWt4_1_0.setHtml(j759, '');\nWt4_1_0.$('ohdqy60').layout.adjust(0);\nWt4_1_0.show('ohdqy60', 'flex');\nWt4_1_0.$('ohdqy4c').wtObj.setCurrent(Wt4_1_0.$('ohdqy2r'));\nWt4_1_0.hide('ohdqy3b');\nWt4_1_0.show('ohdqy2r', '');\n$('#ohdqy3c').removeClass('active');\nvar j760=Wt4_1_0.$('ohdqy37');\nWt4_1_0.$('ohdqy37').wtObj.adjustColumns();\nWt4_1_0.$('ohdqy37').wtObj.setRowHeight(20);\n\nWt4_1_0.$('ohdqy37').layout.adjust(0);\n$('#ohdqy2s').addClass('active');\nWt4_1_0.setHtml(j758,'\r\n \r\n \r\n Application-info\r\n \r\n CallControl-calls\r\n \r\n CallRouter\r\n \r\n Connections\r\n \r\n SCFM-Dica\r\n \r\n Sip\r\n \r\n SipMonitor-info\r\n \r\n Snmp-Destinations\r\n ');\nWt4_1_0.setHtml(j759,'Labo_Geel_Rioc > 192.168.1.247 > IpGw');\nWt4_1_0.$('ohdqx7w').wtEncodeValue = function() {return Wt4_1_0.$('ohdqx7w').scrollTop + ';' + Wt4_1_0.$('ohdqx7w').scrollLeft;}\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nWt.p.setFormObjects(['ohdqx7w','ohdqy25','ohdqy27','ohdqy2w','ohdqy2x','ohdqy4c']);}"",""stack"":""TypeError: Cannot read property 'className' of null\n at A (eval at doJavaScript (http://192.168.1.241/ManagementSystem?wtd=4yeKjGMJjJTNE5rx&sid=704592113&webGL=true&scrW=1920&scrH=1080&tz=60&tzS=Europe%2FBrussels&htmlHistory=true&deployPath=%2FManagementSystem&request=script&rand=360378662:3235:14), :5:696)\n at Wt4_1_0.WTreeView.wtResize (eval at doJavaScript (http://192.168.1.241/ManagementSystem?wtd=4yeKjGMJjJTNE5rx&sid=704592113&webGL=true&scrW=1920&scrH=1080&tz=60&tzS=Europe%2FBrussels&htmlHistory=true&deployPath=%2FManagementSystem&request=script&rand=360378662:3235:14), :5:3967)\n at HTMLDivElement.Wt4_1_0.$.wtResize (eval at doJavaScript (http://192.168.1.241/ManagementSystem?wtd=4yeKjGMJjJTNE5rx&sid=704592113&webGL=true&scrW=1920&scrH=1080&tz=60&tzS=Europe%2FBrussels&htmlHistory=true&deployPath=%2FManagementSystem&request=script&rand=360378662:3235:14), :25:64)\n at Object.eval (eval at doJavaScript (http://192.168.1.241/ManagementSystem?wtd=4yeKjGMJjJTNE5rx&sid=704592113&webGL=true&scrW=1920&scrH=1080&tz=60&tzS=Europe%2FBrussels&htmlHistory=true&deployPath=%2FManagementSystem&request=script&rand=360378662:3235:14), :2:970)\n at HTMLDivElement.Wt4_1_0.ChildrenResize [as wtResize] (eval at doJavaScript (http://192.168.1.241/ManagementSystem?wtd=4yeKjGMJjJTNE5rx&sid=704592113&webGL=true&scrW=1920&scrH=1080&tz=60&tzS=Europe%2FBrussels&htmlHistory=true&deployPath=%2FManagementSystem&request=script&rand=360378662:3235:14), :2:1139)\n at Wt4_1_0.WStackedWidget.wtResize (eval at doJavaScript (http://192.168.1.241/ManagementSystem?wtd=4yeKjGMJjJTNE5rx&sid=704592113&webGL=true&scrW=1920&scrH=1080&tz=60&tzS=Europe%2FBrussels&htmlHistory=true&deployPath=%2FManagementSystem&request=script&rand=360378662:3235:14), :4:1154)\n at Wt4_1_0.WStackedWidget.reApplySize (eval at doJavaScript (http://192.168.1.241/ManagementSystem?wtd=4yeKjGMJjJTNE5rx&sid=704592113&webGL=true&scrW=1920&scrH=1080&tz=60&tzS=Europe%2FBrussels&htmlHistory=true&deployPath=%2FManagementSystem&request=script&rand=360378662:3235:14), :4:193)\n at Wt4_1_0.WStackedWidget.setCurrent (eval at doJavaScript (http://192.168.1.241/ManagementSystem?wtd=4yeKjGMJjJTNE5rx&sid=704592113&webGL=true&scrW=1920&scrH=1080&tz=60&tzS=Europe%2FBrussels&htmlHistory=true&deployPath=%2FManagementSystem&request=script&rand=360378662:3235:14), :4:1932)\n at eval (eval at doJavaScript (http://192.168.1.241/ManagementSystem?wtd=4yeKjGMJjJTNE5rx&sid=704592113&webGL=true&scrW=1920&scrH=1080&tz=60&tzS=Europe%2FBrussels&htmlHistory=true&deployPath=%2FManagementSystem&request=script&rand=360378662:3235:14), :9:28)\n at eval (eval at doJavaScript (http://192.168.1.241/ManagementSystem?wtd=4yeKjGMJjJTNE5rx&sid=704592113&webGL=true&scrW=1920&scrH=1080&tz=60&tzS=Europe%2FBrussels&htmlHistory=true&deployPath=%2FManagementSystem&request=script&rand=360378662:3235:14), :38:89)""}"
[2020-Dec-15 13:51:47.413] 52112 - [info] "WebController: Removing session 4yeKjGMJjJTNE5rx"