TypeError: res.sendfile není funkce

TypeError: res.sendfile není funkce

TypeError: res.sendfile is not a function
    at C:\Users\marri\Documents\web development\mailchecking website\NewsLetter_Signup\app.js:13:7
    at Layer.handle [as handle_request] (C:\Users\marri\Documents\web development\mailchecking website\NewsLetter_Signup\node_modules\express\lib\router\layer.js:95:5)
    at next (C:\Users\marri\Documents\web development\mailchecking website\NewsLetter_Signup\node_modules\express\lib\router\route.js:137:13)
    at Route.dispatch (C:\Users\marri\Documents\web development\mailchecking website\NewsLetter_Signup\node_modules\express\lib\router\route.js:112:3)
    at Layer.handle [as handle_request] (C:\Users\marri\Documents\web development\mailchecking website\NewsLetter_Signup\node_modules\express\lib\router\layer.js:95:5)
    at C:\Users\marri\Documents\web development\mailchecking website\NewsLetter_Signup\node_modules\express\lib\router\index.js:281:22
    at Function.process_params (C:\Users\marri\Documents\web development\mailchecking website\NewsLetter_Signup\node_modules\express\lib\router\index.js:341:12)
    at next (C:\Users\marri\Documents\web development\mailchecking website\NewsLetter_Signup\node_modules\express\lib\router\index.js:275:10)
    at SendStream.error (C:\Users\marri\Documents\web development\mailchecking website\NewsLetter_Signup\node_modules\serve-static\index.js:121:7)
    at SendStream.emit (node:events:520:28)