An unhandled exception occurred: C:\Users\Andrea\Documents\Angular corso\my-app contains both .browserslistrc and browserslist

Hello everybody,
i'm starting to study angular but i can't start because with "ng serve" i get this error as the title:

An unhandled exception occurred: C: \ Users \ Andrea \ Documents \ Angular corso \ my-app contains both .browserslistrc and browserslist

the log brings me back to this line:
const { config, projectRoot, i18n } = await browser_1.buildBrowserWebpackConfigFromContext(browserOptions, context, host, true);

Have any of you had this problem?

Thank you.