Good evening, in fact I am performing an integration of demo2 HTML theme by following all the steps contained in the document Server-Side integration for laravel. once you get to the step to compile the assets. when I run the command: npm run dev it shows me this error:

'mix' is not recognized as an internal or external command, operable program or batch file. npm ERR! code ELIFECYCLE npm ERR! error 1 npm ERR! @dev: npm run development npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the @dev script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in: npm ERR! C:\Users..\AppData\Roaming\npm-cache_logs\2022-02-15T02_39_15_364Z-debug.log. In the stage of Preparing Theme Assets I see you noted this: Copy source folder from theme/src and paste it into laravel/resources. in my case I can't find the src folder in the theme but rather in theme/demo2/src. so is that why I find the problem?