When using postgreSQL as data source, an exception is throwed.

[chrsas]

Describe the bug
When using postgreSQL as data source, an exception is throwed.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'Data'
2. Click on 'Add Data Source'
3. Click on 'New Connection'
4. Choose Postgre Connection
5. Click 'Test'

Expected behavior

Error

未能加载文件或程序集“Microsoft.Extensions.Logging.Abstractions, Version=8.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60”或它的某一个依赖项。找到的程序集清单定义与程序集引用不匹配。 (异常来自 HRESULT:0x80131040)

确定

Stacktrace

• ...
• ...

Screenshots

Device (please complete the following information):

• OS: Windows 11 24H2
• FastReport Community Designer
• Version 2026.1.0

Additional context
My .net runtimes
dotnet --list-runtimes
Microsoft.AspNetCore.All 2.2.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.App 2.2.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 6.0.31 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.2 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.19 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 10.0.0-rc.1.25451.107 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 2.2.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.31 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.2 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.6 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.19 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 10.0.0-rc.1.25451.107 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 6.0.31 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.2 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.6 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.19 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 10.0.0-rc.1.25451.107 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

[BogdanStegachev]

Hello!

Thank you for contacting us!

Reproduced this issue and passed it to our development department, as soon as the changes are available, we will let you know right away

Best regards,
Bogdan

[wandymapn]

same issue here.
any workaround ?

[BogdanStegachev]

Hello!

At the moment as a temporary solution you can use FastReport.Net.Demo and FastReport.Data.Postgres nuget packages in your test application and the error will not occur or you can install FastReport .NET WinForms Trial (with plugins). as shown в our article: https://www.fast-report.com/blogs/designer-net-with-plugins

Best regards,
Bogdan