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I'm using .NET 8.0, Entity FrameworkCore 9.0.2, MySql.EntityFrameworkCore 9.0.0 and when I try to get data from the database I get the following error.
How to resolve this problem?
System.TypeLoadException: Could not load type 'Microsoft.EntityFrameworkCore.Metadata.Internal.AdHocMapper' from assembly 'Microsoft.EntityFrameworkCore, Version=9.0.2.0, Culture=neutral, PublicKeyToken=adb9793829ddae60'.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Hi @Misha Kurytsia , may I know whether your app would work when you use Entity Framework Core V8.x and MySql.EntityFrameworkCore V8.x? As your project is in .Net 8, I'm afraid the issue might come from a nuget package version mismatch. If it doesn't help resolve your issue, could you please share a minimal sample for reproducing your issue?
Hi @Misha Kurytsia , do you have any update on this question?
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Hi @Misha Kurytsia, not sure if you found the answer, I was getting the same error with 9.0.3. I followed article https://github.com/dotnet/efcore/issues/35179 and switched back to 8.0.11 for EF and MySQL.EF packages and got past the error.