It has little information now, would you please share us the detailed information about this issue?
Please share the detailed error messages and the main code which generate this error.
If you get the error like "Unable to start program 'C:\Users\xxx\Debug\xxx.exe The system cannot find the file specified".
Please make sure that whether it has the exe file in your project output folder.
Please clean and rebuild your app and make sure that no compiled error.
Or check your project output path.
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