Exception during start on EV3 Monobrick

[krm2020]

Hi,
I would need some help.

Originally posted by @hbraasch in #29 (comment)

[krm2020]

... with the issue above. It looks similar to #29. It would be very nice if you can have a look on it or give me some tips. The console output on starting the Debug Server and the versions as well as the files on the EV3 device please find below.
I already tried to find out more about the "Missing method .ctor in assembly ...". It seems to occur also on other device types than EV3. Someone wrote about that the linker is to restrictive with unused objects (?). So, I think the problem doesn not have to do necessarily with the Mono on the brick. Could it be found in the Visual Studio Debug-Server project? Or is it problem with the path? Thanks in advance.

Mono version: 2.10.9
Mono CLR: v4.0.30319 (I think this corresponds to .NET 4.6.x)
(Firmware: 1.2.0.39486, Image 1.1.0.0 -> the target is ARM)

root@EV3:~/MonoRemoteDebugger.Server# mono MonoRemoteDebugger.Server.exe
MonoRemoteDebugger.Server v1.5.2
Missing method .ctor in assembly /home/root/MonoRemoteDebugger.Server/MonoRemoteDebugger.SharedLib.dll, type System.Runtime.CompilerServices.ExtensionAttribute
Can't find custom attr constructor image: /home/root/MonoRemoteDebugger.Server/MonoRemoteDebugger.SharedLib.dll mtoken: 0x0a000001

Unhandled Exception: System.TypeLoadException: Could not load type 'System.Runtime.CompilerServices.ExtensionAttribute' from assembly 'MonoRemoteDebugger.SharedLib'.
at MonoRemoteDebugger.Server.Program.Main (System.String[] args) [0x00000] in :0
[ERROR] FATAL UNHANDLED EXCEPTION: System.TypeLoadException: Could not load type 'System.Runtime.CompilerServices.ExtensionAttribute' from assembly 'MonoRemoteDebugger.SharedLib'.
at MonoRemoteDebugger.Server.Program.Main (System.String[] args) [0x00000] in :0
root@EV3:~/MonoRemoteDebugger.Server#

[krm2020]

Just a thought: it looks like the exception is thrown on instancing some object(s) ... (?)

[techcap]

Can you add this code in your project?

namespace System.Runtime.CompilerServices { [AttributeUsage(AttributeTargets.Assembly | AttributeTargets.Class | AttributeTargets.Method)] public sealed class ExtensionAttribute : Attribute { } }

[krm2020]

Thanks for your tipp! I tried it just with the result below. I guess, now I need to replace the NLog.dll to a version that is compatible with Mono 2.10.9 What do you think? If I would be right, do you know where I can find a compiled dll respectively the project to do so... I have not the possibility to install a newer mono. Thanks for your help 2nd time.

[krm2020]

Maybe the other way would be to try an oder version of the remote debugger on the EV3 device. Which version of your project could you recommend?

[techcap]

@krm2020 MissingMethodException came from NLog nuget package. I'm considering removing NLog dependency.

[krm2020]

Hi, did you already remove the NLog dependency as you have written on Nov 23 2020 ? Regards

[techcap]

I didn't do it yet.