TypeError: this.dispatch is not a function

TypeError: this.dispatch is not a function
    at String.request (/root/testApp/node_modules/undici/lib/api/api-request.js:193:10)
    at /root/testApp/node_modules/undici/lib/api/api-request.js:186:15
    at new Promise (<anonymous>)
    at String.request (/root/testApp/node_modules/undici/lib/api/api-request.js:185:12)
    at /root/testApp/node_modules/undici/index.js:83:15
    at SequentialHandler.runRequest (/root/testApp/node_modules/@discordjs/rest/dist/index.js:531:46)
    at SequentialHandler.queueRequest (/root/testApp/node_modules/@discordjs/rest/dist/index.js:464:25)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)

        rest
            .get(Routes.user(this.applicationId))
            .then(data => {
                this.emit('debug', "[DEBUG] Got the client data from the API");
                this.user = new User(data);
            }).catch(e => {
                this.emit('debug', "[DEBUG] Got a error by fetching the client data from the API!" + e);
                console.log(e)
        });