when I do npm run dev The following error comes up:-
rj24@rishi-g5:~/CrowdFunding-Ethereum$ sudo npm run dev [sudo] password for rj24:
[email protected] dev /home/rj24/CrowdFunding-Ethereum node server.js
(node:24992) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'access' of undefined at fileExists (/home/rj24/CrowdFunding-Ethereum/node_modules/next/dist/lib/file-exists.js:1:211) at verifyTypeScriptSetup (/home/rj24/CrowdFunding-Ethereum/node_modules/next/dist/lib/verifyTypeScriptSetup.js:1:3167) at DevServer.prepare (/home/rj24/CrowdFunding-Ethereum/node_modules/next/dist/server/next-dev-server.js:10:1908) at Object. (/home/rj24/CrowdFunding-Ethereum/server.js:13:5) at Module._compile (module.js:652:30) at Object.Module._extensions..js (module.js:663:10) at Module.load (module.js:565:32) at tryModuleLoad (module.js:505:12) at Function.Module._load (module.js:497:3) at Function.Module.runMain (module.js:693:10) (node:24992) 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: 4) (node:24992) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
The library that you are using (next), is trying to use the fs Promises API, and this API is available only on node version 10 and above.
Try running node -v to see the version of node you are currently using.
If you have nvm installed you can "switch" to a different version of node running nvm use v10 or nvm use v11. If you don't have these versions installed you can install by running nvm install v10.