I was trying to install my created extension. First time it worked. After I was trying to install then it shows me the following error.[I am working on windows and Linux platform. But this problem occurred on Linux platform].
namemust be unique. An conflicting entity already exists - id: 96
Sorry, due to an error, we are unable to fulfill your request at the moment. You may want to contact your administrator or service provider with more details about what action you were performing when this occurred.
name must be unique. An conflicting entity already exists - id: 96