call dotnetframework dll Error Occurred Illegal characters in path

[junshangshui]

I use VS2017 create a .netframework4.5 dll, the dll has use a devExpress control，when electron call this dll ,Error Occurred,, Illegal characters in path
the key codes are as follows
let add = edge.func({ assemblyFile: path.join(__static, 'ClassLibrary1.dll'), typeName: 'ClassLibrary1.Class1', methodName: 'Add' }) ipcMain.on('calltest', (event, arg) => { add(arg, function (error, result) { if (error) throw error console.log(result) }) })
sorry , my english is not good.