Please understand that sentences may be weird if you use a translator.

I developed Component using OPENGL in C# now. It was running without any problems before, but suddenly it got an error. I tried debugging to know the cause, but I still don’t know the cause.
I don’t know why because the following error window appears and doesn’t run.

enter image description here

I deleted the dll I added to the reference and added it again.

The same thing happens when you use the code you backed up a few days ago.