# Error building Plotly Dash **URL:** \ **Category:** Dash Python\ **Created:** [October 27, 2021, 3:43pm UTC](https://community.plotly.com/t/error-building-plotly-dash/57967 "2021-10-27T15:43:44Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![danielk](https://avatars.discourse-cdn.com/v4/letter/d/a88e57/32.png) [@danielk](https://community.plotly.com/u/danielk)\ **Post date:** [October 27, 2021, 3:43pm UTC](https://community.plotly.com/t/error-building-plotly-dash/57967/1 "2021-10-27T15:43:44Z")
I really want to contribute to Plotly Dash, following the contribution steps on ([GitHub - plotly/dash: Analytical Web Apps for Python, R, Julia, and Jupyter. No JavaScript Required.](https://github.com/plotly/dash)) and have an issue while building it on Windows 10/Python3.8. Posted it on [python - Error building Plotly Dash (npm run build) - Stack Overflow](https://stackoverflow.com/questions/69738236/error-building-plotly-dash-npm-run-build) Any help or advice would be appreciated, Thanks. ---
**Author:** ![danielk](https://avatars.discourse-cdn.com/v4/letter/d/a88e57/32.png) [@danielk](https://community.plotly.com/u/danielk)\ **Post date:** [October 27, 2021, 7:38pm UTC](https://community.plotly.com/t/error-building-plotly-dash/57967/2 "2021-10-27T19:38:49Z")
While digging into the error, I found the following problem. Any idea? > python dash/development/update\_components.py ‘all’ > ‘dash-html-components’ is not recognized as an internal or external command, > operable program or batch file. > > Failed installing npm dependencies for the following component packages dash-core-components|dash-html-components|dash-table (status=255) > ‘dash-html-components’ is not recognized as an internal or external command, > operable program or batch file. > > 🟢 Finished updating the following component packages dash-core-components|dash-html-components|dash -table (status=255) 🟢