Я столкнулся с проблемой, связанной с установкой npm, и перепробовал все команды реестра, но все еще не смог решить проблему
npm timing stage:rollbackFailedOptional Completed in 0ms
npm timing stage:runTopLevelLifecycles Completed in 2109ms
npm verb stack SyntaxError: Unexpected token < in JSON at position 0 while parsing near '<HTML><HEAD>
npm verb stack <T...'
npm verb stack at JSON.parse (<anonymous>)
npm verb stack at parseJson (C:\Program Files\nodejs\node_modules\npm\node_modules\json-parse-better-errors\index.js:7:17)
npm verb stack at consumeBody.call.then.buffer (C:\Program Files\nodejs\node_modules\npm\node_modules\node-fetch-npm\src\body.js:96:50)
npm verb stack at process._tickCallback (internal/process/next_tick.js:68:7)
npm verb cwd C:\mylearn\react-app\simple-react-full-stack-master
npm verb Windows_NT 10.0.17134
npm verb argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "install"
npm verb node v10.15.0
npm verb npm v6.4.1
npm ERR! Unexpected token < in JSON at position 0 while parsing near '<HTML><HEAD>
npm ERR! <T...'
npm verb exit [ 1, true ]