Markov Dranoski

Can somebody help me with my problem (node:396) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'x' of null at new e.exports (C:\Users\Admin\Desktop\Neuer Ordner\server-files\packages\RP\index.js:1:67254) at Object.saveNewCar (C:\Users\Admin\Desktop\Neuer Ordner\server-files\packages\RP\index.js:1:40735) at process._tickCallback (internal/process/next_tick.js:68:7)(node:396) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 2)