Element type "suites-files" must be declared error

[modusemerson]

Trying to run my testng master file that contains other suite-files, with this version Im getting this error

[RemoteTestNG] detected TestNG version 6.9.10

org.testng.TestNGException: org.xml.sax.SAXParseException; lineNumber: 8; columnNumber: 15; Element type "suites-files" must be declared.

The Dependency Management tool for your project

• [x ] Maven
• [ ] Gradle
• [ ] Ant
• [ ] Eclipse Buildpath (aka. Use "TestNG Library" for your project in Eclipse)

Operating System

• [x ] Windows
• [ ] Linux
• [ ] OSX

[missedone]

could you share a sample project to produce this. thx