We used DB method to migrate , but it seems one of the page showing below error, we have migrated from 2010 to 13 and to 16
Please see the difference when browsing same page from 2010 and 2016: 

We used DB method to migrate , but it seems one of the page showing below error, we have migrated from 2010 to 13 and to 16
Please see the difference when browsing same page from 2010 and 2016: 

Hi @sns1 ,
If all of your KWizCom products are not on the same release version, it is possible for SharePoint to not be able to find a required version of Telerik.Web.UI.dll.
After you deploy the latest version, please check the "OWSTIMER.EXE.CONFIG" file on the server where the SharePoint Timer runs.
1.Go to C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\BIN folder
2.Find and open OWSTIMER.EXE.CONFIG fileNote:Please check that you have bindingRedirect for KWizCom Foundation. Make sure that it redirect always to version 13.3.0.0.
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="KWizCom.SharePoint.WikiPlus.Telerik.Web.UI" publicKeyToken="30fb4ddbec95ff8f" culture="neutral" />
<bindingRedirect oldVersion="1.0.0.0-20.0.0.00" newVersion="13.3.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="KWizCom.SharePoint.WikiPlus.Telerik.Web.UI" publicKeyToken="30fb4ddbec95ff8f" culture="neutral" />
<bindingRedirect oldVersion="1.0.0.0-20.0.0.00" newVersion="13.3.0.0" />
</dependentAssembly>
</assemblyBinding>
</runtime>
3.Please make sure that you restart SharePoint Timer (OWSTimer) and restart IIS after you deploy the latest version or make any changes in OWSTIMER.EXE.CONFIG file.
Here is a similar blog for your reference.
Thanks,
Echo Du
======================= Updated Answer ======================
Hi @sns1 ,
1)Remove Site collection using PowerShell:
Remove-SPSite cmdlet with -GradualDelete switch
The -GradualDelete parameter instructs to delete the site collection gradually, instead of consuming all system resources to delete the site collection instantly in a single stretch. This reduces the load on the system when deleting large site collections.
Remove-SPSite -Identity "Site-collection-URL" -GradualDelete
Force delete SharePoint site collection with PowerShell
If you face any difficulty in deleting SharePoint site collection either from Central Admin or with PowerShell, you can force delete site collection from the content database as:
#Get the site collection to delete
$Site = Get-SPSite http://site-collection-url
#Get the content database of the site collection
$SiteContentDB = $site.ContentDatabase
#Force delete site collection
$SiteContentDB.ForceDeleteSite($Site.Id, $false, $false)
2)In SharePoint 2016, only one attachment can be uploaded at a time, but you can add attachments multiple times.

3)Personal list view can be retained after migration.
Thanks,
Echo Du
=======================
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Hi @sns1 ,
Is there anything else I can help with regarding this issue?
You can comment us at any time and we will continue to follow up.
Thanks,
Echo Du
Hi Echo Du,
Thank you for the follow up
I understood from my team leads that we should not do anything on 2016 server as this kwizcom feature not supported in 2016
however I have to do something by editing the page. Can you please suggest further on this? OR I would like to delete this page. Can u please guide me to delete this error page
OR you can see this page in 2010 which is custom page that is why it not migrated. 
any alternatives in 2016 for his kind of page? please suggest
& below are some general questions, not related to this thread. please clarify :
1. Is bulk upload of attachments possible in 2016? Attaching files when creating a new list item still can only be done one at a time.
Are personal list views preserved after migration?
Hi @sns1 ,
Thanks for your reply.
I have updated answer under initial My Answer. Hope this can help you to solve issue.
Have a nice day!
Thanks,
Echo Du
Hi Echo Du,
1. I want to delete only that customer page not site collection. I want to create alternative for that page using OOB , can you please suggest.
2. I got it
3. How personal view list can be retained? Please share me steps
Hi @sns1 ,
Is there anything else I can help with regarding this issue?
You can comment us at any time and we will continue to follow up.
Thanks,
Echo Du
Hi @sns1 ,
Thanks for your reply.
1) Go to the Site Pages library as an administrator, then select the corresponding page, click the ellipsis icon, and select Delete.

2) Generally speaking, if you migrate the entire list/site/site collection/farm to another SharePoint environment, then the personal list view will also be automatically migrated. But it is impossible to migrate the personal list view separately.
3) If you want to create alternative methods for this page using OOB, it is recommended that you open a new post for better help.
Thanks,
Echo Du
Hi @sns1 ,
Would you tell me whether your issue has been resolved or have any update ?
I am looking forward to your reply.
Have a nice day!
Thanks,
Echo Du
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