very useful tip for a lot of people who meet this issue (so do I)

Le 04/04/2016 14:53, Alexander Wels a écrit :
On Monday, April 04, 2016 08:19:58 AM Bloemen, Jurriën wrote:
Hi all,

After upgrading to 3.6.4 I'm seeing errors in the webadmin portal when
doing the following:

- Click on hosts.
- Select a host
- Put it in to maintenance
- VMs get migrated from the host
- Select an other host and go back to the first host
- I get the following messages in the screen:

Uncaught exception occurred. Please try reloading the page. Details:
Exception caught: (TypeError) __gwt$exception: <skipped>: Cannot read
property 'cZ' of null
Please have your administrator check the UI logs

Uncaught exception occurred. Please try reloading the page. Details:
(TypeError) __gwt$exception: <skipped>: Cannot read property 'cZ' of null
Please have your administrator check the UI logs


ui.log:

2016-04-04 09:02:04,431 ERROR
[org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService]
(default task-572) [] Permutation name: 66E351AA64642526AAD6BC90105ABC9B
2016-04-04 09:02:04,431 ERROR
[org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService]
(default task-572) [] Uncaught exception: :
com.google.gwt.event.shared.UmbrellaException: Exception caught:
(TypeError)
   __gwt$exception: <skipped>: Cannot read property 'cZ' of null
      at
Unknown.ps(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA64
642526AAD6BC90105ABC9B.cache.html@2739)
  at
Unknown.xs(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA64
642526AAD6BC90105ABC9B.cache.html@41)at
Unknown.C3(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@19) at
Unknown.F3(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA64
642526AAD6BC90105ABC9B.cache.html@19)
  at
Unknown.P2(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA64
642526AAD6BC90105ABC9B.cache.html@117)
  at
Unknown.Wvf(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@41)
  at Unknown.Mdm(<anonymous>@552)
at Unknown.Xdm(<anonymous>@40763) at
Unknown.$vf(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@13399)
  at
Unknown.Mu(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA64
642526AAD6BC90105ABC9B.cache.html@102)
  at
Unknown.Cu(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA64
642526AAD6BC90105ABC9B.cache.html@59)
  at
Unknown.eu(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA64
642526AAD6BC90105ABC9B.cache.html@19)
  at
Unknown.du(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA64
642526AAD6BC90105ABC9B.cache.html@177)
  at
Unknown.<anonymous>(https://twinp101.mgt.example.net/ovirt-engine/webadmin/6
6E351AA64642526AAD6BC90105ABC9B.cache.html@54)Caused
  by:
com.google.gwt.core.client.JavaScriptException: (TypeError)
   __gwt$exception: <skipped>: Cannot read property 'cZ' of null
      at
Unknown.jWg(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@93)
  at Unknown.d9s(<anonymous>@48)    at
Unknown.i9s(<anonymous>@41)    at Unknown.k9s(<anonymous>@63527)    at
Unknown.kNr(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@189)
  at
Unknown.Onl(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@19)
  at
Unknown.jKp(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@36)
  at
Unknown.BJo(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@53)
  at
Unknown.XIo(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@31)
  at
Unknown.NJo(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@23255)
  at
Unknown.eso(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@70)
  at
Unknown.lto(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@29)
  at
Unknown.Yto(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@29101)
  at
Unknown.oRk(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@36)
  at Unknown.Res(<anonymous>@59866)
at
Unknown.Vvf(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@13252)
  at
Unknown.x$(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA64
642526AAD6BC90105ABC9B.cache.html@2901)
  at
Unknown.Z2(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA64
642526AAD6BC90105ABC9B.cache.html@209)
  at
Unknown.P2(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA64
642526AAD6BC90105ABC9B.cache.html@59)
  ... 9 more
2016-04-04 09:02:10,076 ERROR
[org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService]
(default task-573) [] Permutation name: 66E351AA64642526AAD6BC90105ABC9B
2016-04-04 09:02:10,076 ERROR
[org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService]
(default task-573) [] Uncaught exception: :
com.google.gwt.core.client.JavaScriptException: (TypeError)
   __gwt$exception: <skipped>: Cannot read property 'cZ' of null
      at
Unknown.jWg(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@93)
  at Unknown.d9s(<anonymous>@48)    at
Unknown.i9s(<anonymous>@41)    at Unknown.k9s(<anonymous>@63527)    at
Unknown.kNr(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@189)
  at
Unknown.Onl(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@19)
  at
Unknown.cKp(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@36)
  at
Unknown.bKp(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@17)
  at
Unknown.BJo(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@90)
  at
Unknown.XIo(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@31)
  at
Unknown.NJo(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@23255)
  at
Unknown.dto(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@524)
  at
Unknown.Xto(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@29066)
  at
Unknown.zzo(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@6630)
  at
Unknown.BQn(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@84)
  at
Unknown.EQn(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@438)
  at
Unknown.vUn(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@40)
  at
Unknown.yUn(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@25827)
  at
Unknown.tTn(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@180)
  at
Unknown.wTn(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@24587)
  at
Unknown.xJe(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@20025)
  at
Unknown._yk(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@9583)
  at
Unknown.P3(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA64
642526AAD6BC90105ABC9B.cache.html@137)
  at
Unknown.g4(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA64
642526AAD6BC90105ABC9B.cache.html@7171)
  at
Unknown.<anonymous>(https://twinp101.mgt.example.net/ovirt-engine/webadmin/6
6E351AA64642526AAD6BC90105ABC9B.cache.html@65)
  at
Unknown._t(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA64
642526AAD6BC90105ABC9B.cache.html@29)at
Unknown.du(https://twinp101.mgt.example.net/ovirt-engine/webadmin/66E351AA6
4642526AAD6BC90105ABC9B.cache.html@57) at
Unknown.<anonymous>(https://twinp101.mgt.example.net/ovirt-engine/webadmin/6
6E351AA64642526AAD6BC90105ABC9B.cache.html@54)
I have the following version of the packages:

ovirt-engine-3.6.4.1-1.el7.centos.noarch
ovirt-engine-webadmin-portal-3.6.4.1-1.el7.centos.noarch

And it is running on CentOS 7.

Is this a bug? or went something wrong when upgrading?

It is most likely a bug in the UI. The stack trace in the UI.log is an
obfuscated stack trace so no that useful. If you can reproduce this reliably
can you do the following?

1. Install the ovirt UI debug symbol maps by running:
yum install ovirt-engine-webadmin-portal-debuginfo ovirt-engine-userportal-
debuginfo

This will install the symbol maps that will allow us to translate the
obfuscated code back into the original source code. We don't normally install
this by default as its rather large ~80 megabytes.

2. Log into the webadmin again and do the same steps that generate the
exception popup. Look in the UI.log again. This time the stack trace should be
readable. Please open a bug in bugzilla and include the non obfuscated stack
trace, or post the stack trace here and I can open it for you.

Thanks,
Alexander

Kind Regards,

Jurriën Bloemen
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