Xcode Application(for macosx) damaged error from Client Side

Hi Guys,

I have issue in app file(Mac OS) export from the Xcode. The application UI is developed in the Xcode and it trigger the photoshop or indesign to run the function. Usually, the application is working fine at our end but its not open in the client side. The below error thrown from their side

"Application is damaged and can't be opened error".

Option1:

I have taken the app from the below path after clik the run button and build is succeed.

/Users/Username/Library/Developer/Xcode/DerivedData/XXXX-ajbrezadkgihoxcuxijafzszkxkz/Build/Products/Debug

Option2:

And  export through :

Product > Archive > Archives > distribute>copy app

I haved tried both two options its working fine at our end, but not working at the Client side. Could anyone please help me to resolove this issue.