Thanks for the reply
But the error did not resolve even after it i resolved some issues by these links but not able to solve all:

This is error which i am not able to solve so i need you help in it
Thank You

 npm start


> @joplin/app-desktop@2.6.2 start
> gulp build && electron . --env dev --log-level debug --no-welcome --open-dev-tools

[18:33:38] Using gulpfile ~/Desktop/joplin/packages/app-desktop/gulpfile.js
[18:33:38] Starting 'build'...
[18:33:38] Starting 'compileScripts'...
[18:33:38] Starting 'compilePackageInfo'...
[18:33:38] Starting 'copyPluginAssets'...
[18:33:38] Starting 'copyTinyMceLangs'...
[18:33:38] Starting 'updateIgnoredTypeScriptBuild'...
[18:33:38] Starting 'buildCommandIndex'...
[18:33:38] Starting 'compileSass'...
Compiling /Users/shreyaansjain/Desktop/joplin/packages/app-desktop/tools/../gui/ExtensionBadge.jsx...

node:internal/modules/cjs/loader:936
  throw err;
  ^

Error: Cannot find module 'babel-runtime/core-js/object/keys'
Require stack:
- /Users/shreyaansjain/Desktop/joplin/packages/app-desktop/node_modules/babel-cli/lib/babel/index.js
- /Users/shreyaansjain/Desktop/joplin/packages/app-desktop/node_modules/babel-cli/bin/babel.js
    at Function.Module._resolveFilename (node:internal/modules/cjs/loader:933:15)
    at Function.Module._load (node:internal/modules/cjs/loader:778:27)
    at Module.require (node:internal/modules/cjs/loader:999:19)
    at require (node:internal/modules/cjs/helpers:102:18)
    at Object.<anonymous> (/Users/shreyaansjain/Desktop/joplin/packages/app-desktop/node_modules/babel-cli/lib/babel/index.js:4:13)
    at Module._compile (node:internal/modules/cjs/loader:1097:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1149:10)
    at Module.load (node:internal/modules/cjs/loader:975:32)
    at Function.Module._load (node:internal/modules/cjs/loader:822:12)
    at Module.require (node:internal/modules/cjs/loader:999:19) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
    '/Users/shreyaansjain/Desktop/joplin/packages/app-desktop/node_modules/babel-cli/lib/babel/index.js',
    '/Users/shreyaansjain/Desktop/joplin/packages/app-desktop/node_modules/babel-cli/bin/babel.js'
  ]
}

Node.js v17.2.0

[18:33:38] The following tasks did not complete: build, compileScripts, compilePackageInfo, copyPluginAssets, copyTinyMceLangs, updateIgnoredTypeScriptBuild, buildCommandIndex, compileSass
[18:33:38] Did you forget to signal async completion?