Help me with Visual Studio with GMOD

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Your probably missing vgui :: IForceVirtualInheritancePanel

Please, when you solve your problem next time, instead of snipping the whole post, post what was really the problem and the solution for it so that other people that have the same problem can easily look for a solution.

I don’t think anyone would ever have that error or even a doubt like that, even OP had no idea what he was asking