Blank screen on electron

i follow the build.md file thoroughly yarn give install ends with error and after starting electron app it just show blank screen

p.s : I'm using win 11

used npm instead if yarn it ends with no error but still blank screen

https://github.com/laurent22/joplin/blob/dev/BUILD.md#troubleshooting

sir, console screen give this error
DevTools failed to load source map: Could not parse content for file:///F:/Project/testingrc/joplin/packages/app-desktop/index.js.map: Unexpected end of JSON input
DevTools failed to load source map: Could not parse content for file:///F:/Project/testingrc/joplin/packages/app-desktop/AsyncActionQueue.js.map: Unexpected end of JSON input

These are benign I think. Any more errors there?

it give this error while installing packages

This file contains the result of Yarn building a package (@joplin/app-desktop@workspace:packages/app-desktop)

Script name: postinstall

[e[90m16:54:54e[39m] Using gulpfile F:\Project\New folder\packages\app-desktop\gulpfile.js
[e[90m16:54:54e[39m] Starting 'build'...
[e[90m16:54:54e[39m] Starting 'compileScripts'...
[e[90m16:54:54e[39m] Starting 'compilePackageInfo'...
[e[90m16:54:54e[39m] Starting 'copyPluginAssets'...
[e[90m16:54:54e[39m] Starting 'copyApplicationAssets'...
[e[90m16:54:54e[39m] Starting 'updateIgnoredTypeScriptBuild'...
[e[90m16:54:54e[39m] Starting 'buildCommandIndex'...
[e[90m16:54:54e[39m] Starting 'compileSass'...
Compiling F:\Project\New folder\packages\app-desktop\tools/../gui/ExtensionBadge.jsx...

folder\packages\app-desktop\tools/../gui/ExtensionBadge.min.js doesn't exist. F:\Project\New doesn't exist. folder\packages\app-desktop\tools/../gui/ExtensionBadge.jsx doesn't exist

[e[90m16:55:13e[39m] The following tasks did not complete: build, compileScripts, compilePackageInfo, copyPluginAssets, copyApplicationAssets, updateIgnoredTypeScriptBuild, buildCommandIndex, compileSass
[e[90m16:55:13e[39m] Did you forget to signal async completion?

i checked this is a problem in compilescript task of gulp

this is the error is gives
folder\packages\app-desktop\gui\ExtensionBadge.min.js doesn't exist. F:\Project\New doesn't exist. folder\packages\app-desktop\gui\ExtensionBadge.jsx doesn't exist

Try path without spaces

yes it fixed the issue thank you very much