How to solve new app 401 authentication error ?

[mrkarim]

I have just created an shopify app using Shopify cli command. After successfully create the app boilerplate I run the app using yarn run dev command and it successfully run and provided me an URL and I install the app in my store. But I see I am getting 401 authentication error. Here is my error message below

Response {
   [Symbol(realm)]: { settingsObject: {} },
   [Symbol(state)]: {
     aborted: false,
     rangeRequested: false,
     timingAllowPassed: false,
     requestIncludesCredentials: false,
     type: 'default',
     status: 401,
     timingInfo: null,
     cacheState: '',
     statusText: 'Unauthorized',
     headersList: HeadersList {
       cookies: null,
       [Symbol(headers map)]: [Map],
       [Symbol(headers map sorted)]: null
     },
     urlList: []
   },
   [Symbol(headers)]: HeadersList {
     cookies: null,
     [Symbol(headers map)]: Map(1) { 'x-shopify-retry-invalid-session-request' => [Object] },
     [Symbol(headers map sorted)]: null
   }
 }

I have cleared my cache , session , local storage several times but still facing the same 401 issue. I have created and .env file under app folder and put SHOPIFY_API_SECRET,SHOPIFY_API_KEY variable from the app configuration. How can I solve the issue ? I have attached the screenshot below.

[mrkarim · Accepted solution]

I just updated my laptop time and it fixed.