NullReferenceException in ConvertRelatedLinksToMultiUrlPicker during v7.15.10 to v8.18.8 migration
Hello,
I'm getting a NullReferenceException while trying to execute the database migration to v8.18.8 on my v.7.15.10 Umbraco project. According to the call stack, this exception is thrown here:
Umbraco.Core.dll!Umbraco.Core.Migrations.Upgrade.V_8_0_0.ConvertRelatedLinksToMultiUrlPicker.Migrate() Line 63
I have no idea what could be causing this exception. Line 63 in ConvertRelatedLinksToMultiUrlPicker.cs is GuidUdi udi = null;(source), so it is very strange to me that a NullReferenceException is occurring here at all.
I have a few content documents using empty RelatedLink2 fields, but removing them does not solve this issue. Manually replacing all instances of RelatedLinks2 with MultiUrlPicker before upgrading does seem to fix this issue, but the links themselves are not preserved. I checked the database and there doesn't seem to be any missing values.
Hopefully someone can provide some insight into this problem. Any help will be greatly appreciated!
Built a blank Umbraco v8.18.8 site from scratch and it turns out the debugger was slightly off - the NullReferenceException was actually occuring on line 64:
if (relatedLink.IsInternal) {
...
For some unknown reason, some of the relatedLinks were null at this point, so I added a simple check right before this if-statement:
if (relatedLink == null)
continue;
In order to use the ProWorks.Umbraco8.Migrations package, I then re-built Umbraco.Core, took src\Umbraco.Core\bin\Release\Umbraco.Core.dll from the custom-built project, and replaced packages\UmbracoCms.Core.8.18.8\lib\net472\Umbraco.Core.dll in my previous blank v8.18.8 project. I've submitted a pull request for this change here.
NullReferenceException in ConvertRelatedLinksToMultiUrlPicker during v7.15.10 to v8.18.8 migration
Hello,
I'm getting a NullReferenceException while trying to execute the database migration to v8.18.8 on my v.7.15.10 Umbraco project. According to the call stack, this exception is thrown here:
I have no idea what could be causing this exception. Line 63 in
ConvertRelatedLinksToMultiUrlPicker.csisGuidUdi udi = null;(source), so it is very strange to me that a NullReferenceException is occurring here at all.I have a few content documents using empty RelatedLink2 fields, but removing them does not solve this issue. Manually replacing all instances of RelatedLinks2 with MultiUrlPicker before upgrading does seem to fix this issue, but the links themselves are not preserved. I checked the database and there doesn't seem to be any missing values.
Hopefully someone can provide some insight into this problem. Any help will be greatly appreciated!
Update:
Built a blank Umbraco v8.18.8 site from scratch and it turns out the debugger was slightly off - the NullReferenceException was actually occuring on line 64:
For some unknown reason, some of the
relatedLinks were null at this point, so I added a simple check right before this if-statement:In order to use the ProWorks.Umbraco8.Migrations package, I then re-built Umbraco.Core, took
src\Umbraco.Core\bin\Release\Umbraco.Core.dllfrom the custom-built project, and replacedpackages\UmbracoCms.Core.8.18.8\lib\net472\Umbraco.Core.dllin my previous blank v8.18.8 project. I've submitted a pull request for this change here.is working on a reply...