# OS & CPU Tab Fails to Load in Template Creation **URL:** \ **Category:** Installation & Configuration\ **Created:** [January 20, 2026, 12:29pm UTC](https://forum.opennebula.io/t/os-cpu-tab-fails-to-load-in-template-creation/14367 "2026-01-20T12:29:42Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![Andrew\_Hancock](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.opennebula.io/andrew_hancock/32/8806_2.png) [@Andrew\_Hancock](https://forum.opennebula.io/u/Andrew_Hancock)\ **Post date:** [January 20, 2026, 12:29pm UTC](https://forum.opennebula.io/t/os-cpu-tab-fails-to-load-in-template-creation/14367/1 "2026-01-20T12:29:42Z")
When selecting OS&CPU in the Create Template, I just get a blank page in the browser - WHY ? Early December last year, stopped the PoC because of this, but I thought I would continue this year, and still the same issue. Tried restarting services, restarting the server. different accounts, different browsers, Edge, Chrome and Firefox Opennebula 7.0.1 ---
**Author:** ![dcarracedo](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.opennebula.io/dcarracedo/32/7855_2.png) [@dcarracedo](https://forum.opennebula.io/u/dcarracedo)\ **Post date:** [January 21, 2026, 7:32am UTC](https://forum.opennebula.io/t/os-cpu-tab-fails-to-load-in-template-creation/14367/2 "2026-01-21T07:32:56Z")
Hello Andrew, We have been checking release 7.0.1, but we are not able to reproduce the error. It would be very helpful if you could provide us with some additional information. Please open Sunstone in Chrome and open the DevTools console by pressing **F12**. Once the console is open, click on the **OS & CPU** tab. An error should appear in the console; please copy that error and send it to us. Additionally, any details about your environment would be helpful (for example, whether this is a fresh OpenNebula installation, whether you have hosts configured, if you are using KVM, etc.). Kind regards, ---
**Author:** ![Andrew\_Hancock](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.opennebula.io/andrew_hancock/32/8806_2.png) [@Andrew\_Hancock](https://forum.opennebula.io/u/Andrew_Hancock)\ **Post date:** [January 21, 2026, 10:28am UTC](https://forum.opennebula.io/t/os-cpu-tab-fails-to-load-in-template-creation/14367/3 "2026-01-21T10:28:47Z")
There are 4 errors (RED), and 34 warnings (yellow) - here are the RED errors react-dom.production.min.js:216 TypeError: Cannot read properties of undefined (reading ‘split’) at Host.js:139:50 at Array.map () at Te (Host.js:139:6) at values (cpuModelSchema.js:54:26) at FormWithSchema.js:393:25 at Array.reduce () at FormWithSchema.js:387:36 | | | | --- | --- | react-dom.production.min.js:216 TypeError: Cannot read properties of undefined (reading ‘split’) at Host.js:176:48 at Array.map () at Ae (Host.js:176:6) at values (bootSchema.js:71:25) at FormWithSchema.js:393:25 at Array.reduce () at FormWithSchema.js:387:36 | | | | --- | --- | react-dom.production.min.js:123 Uncaught TypeError: Cannot read properties of undefined (reading ‘split’) at Host.js:139:50 at Array.map () at Te (Host.js:139:6) at values (cpuModelSchema.js:54:26) at FormWithSchema.js:393:25 at Array.reduce () at FormWithSchema.js:387:36 | | | | --- | --- | This is a fresh installaton of Opennebula 7.0.1. Everything was configured by the installation. ---
**Author:** ![dcarracedo](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.opennebula.io/dcarracedo/32/7855_2.png) [@dcarracedo](https://forum.opennebula.io/u/dcarracedo)\ **Post date:** [January 21, 2026, 5:14pm UTC](https://forum.opennebula.io/t/os-cpu-tab-fails-to-load-in-template-creation/14367/4 "2026-01-21T17:14:18Z")
> [@Andrew\_Hancock](#): > > Cannot read properties of undefined (reading ‘split’) Hello Andrew, The **KVM\_CPU\_MODELS** attribute is not present on one of your hosts, and this is causing the failure. We will fix this in future versions of OpenNebula. In the meantime, to continue with your PoC, please follow these steps: 1. Check whether any of your hosts are missing the **KVM\_CPU\_MODELS** attribute. You can verify this using the CLI: 2. For any host that does not have the **KVM\_CPU\_MODELS** attribute, update the host using the CLI: 3. Add the attribute **KVM\_CPU\_MODELS=“”** (with an empty value). 4. Refresh Sunstone and check the **OS & CPU** tab again. Also, could you let us know how the host is configured? Thanks! ---
**Author:** ![Andrew\_Hancock](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.opennebula.io/andrew_hancock/32/8806_2.png) [@Andrew\_Hancock](https://forum.opennebula.io/u/Andrew_Hancock)\ **Post date:** [January 22, 2026, 10:57am UTC](https://forum.opennebula.io/t/os-cpu-tab-fails-to-load-in-template-creation/14367/5 "2026-01-22T10:57:03Z")
We just installed via minione, so it looks like this ```auto admin@host:~$ onehost show 0 HOST 0 INFORMATION ID : 0 NAME : host CLUSTER : cluster STATE : MONITORED IM_MAD : collectd VM_MAD : kvm LAST MONITORING TIME : - HOST SHARES RUNNING VMS : 2 MEMORY TOTAL : 125.6G TOTAL +/- RESERVED : 125.6G USED (REAL) : 0K USED (ALLOCATED) : 896M CPU TOTAL : 1200 TOTAL +/- RESERVED : 1200 USED (REAL) : USED (ALLOCATED) : 110 MONITORING INFORMATION HYPERVISOR="kvm" IM_MAD="collectd" VERSION="7.0.1" VM_MAD="kvm" NUMA NODES ID CORES USED FREE 0 - - - - - - 0 6 1 - - - - - - 0 6 NUMA MEMORY NODE_ID TOTAL USED_REAL USED_ALLOCATED FREE 0 62.6G - 0K - 1 63G - 0K - NUMA HUGEPAGES NODE_ID SIZE TOTAL FREE USED 0 2M 0 - 0 0 1024M 0 - 0 1 2M 0 - 0 1 1024M 0 - 0 WILD VIRTUAL MACHINES NAME DEPLOY_ID CPU MEMORY VIRTUAL MACHINES ID USER GROUP NAME STAT CPU MEM HOST TIME 34 admin oneadmin Ttylinux - KVM-34 runn 0.1 128M host 1d 18h31 33 admin oneadmin Service WordPress - KVM-33 runn 1 768M host 1d 20h56 ``` ---
**Author:** ![Andrew\_Hancock](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.opennebula.io/andrew_hancock/32/8806_2.png) [@Andrew\_Hancock](https://forum.opennebula.io/u/Andrew_Hancock)\ **Post date:** [January 22, 2026, 11:12am UTC](https://forum.opennebula.io/t/os-cpu-tab-fails-to-load-in-template-creation/14367/6 "2026-01-22T11:12:36Z")
> [@dcarracedo](#): > > Refresh Sunstone We updated and now have HYPERVISOR=“kvm” IM\_MAD=“collectd” KVM\_CPU\_MODELS=“” VERSION=“7.0.1” VM\_MAD=“kvm” and it’s not made any difference ---
**Author:** ![dcarracedo](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.opennebula.io/dcarracedo/32/7855_2.png) [@dcarracedo](https://forum.opennebula.io/u/dcarracedo)\ **Post date:** [January 22, 2026, 11:15am UTC](https://forum.opennebula.io/t/os-cpu-tab-fails-to-load-in-template-creation/14367/7 "2026-01-22T11:15:25Z")
Hello Andrew, The **IM\_MAD** attribute on the host is not correct; it should be set to **“kvm”**. Please follow the steps below: 1. Use `onehost update` to change **IM\_MAD** to `"kvm"`. 2. Execute `onehost sync --force`. 3. Execute `onehost forceupdate`. Please perform these steps and let us know whether the issue is resolved. Thanks! ---
**Author:** ![Andrew\_Hancock](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.opennebula.io/andrew_hancock/32/8806_2.png) [@Andrew\_Hancock](https://forum.opennebula.io/u/Andrew_Hancock)\ **Post date:** [January 22, 2026, 11:20am UTC](https://forum.opennebula.io/t/os-cpu-tab-fails-to-load-in-template-creation/14367/8 "2026-01-22T11:20:47Z")
> [@Andrew\_Hancock](#): > > KVM\_CPU\_MODELS=“” We were thinking of uninstalling and re-installing and trying again. ---
**Author:** ![Andrew\_Hancock](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.opennebula.io/andrew_hancock/32/8806_2.png) [@Andrew\_Hancock](https://forum.opennebula.io/u/Andrew_Hancock)\ **Post date:** [January 22, 2026, 11:21am UTC](https://forum.opennebula.io/t/os-cpu-tab-fails-to-load-in-template-creation/14367/9 "2026-01-22T11:21:51Z")
okay, lets change that, our posts crossed, no idea why that is what it is! ---
**Author:** ![Andrew\_Hancock](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.opennebula.io/andrew_hancock/32/8806_2.png) [@Andrew\_Hancock](https://forum.opennebula.io/u/Andrew_Hancock)\ **Post date:** [January 22, 2026, 11:24am UTC](https://forum.opennebula.io/t/os-cpu-tab-fails-to-load-in-template-creation/14367/10 "2026-01-22T11:24:38Z")
Thank you FIXED! ---
**Author:** ![system](https://canada1.discourse-cdn.com/flex031/uploads/opennebula/original/2X/1/14d66f1130b9cd292905f575da9b68a9f574dd03.png) [@system](https://forum.opennebula.io/u/system)\ **Post date:** [January 24, 2026, 11:25am UTC](https://forum.opennebula.io/t/os-cpu-tab-fails-to-load-in-template-creation/14367/11 "2026-01-24T11:25:11Z")
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