# Installing Backend

**URL:** <https://forum.codewithmosh.com/t/installing-backend/10576>\
**Category:** React Native\
**Created:** [February 10, 2022, 6:29am UTC](https://forum.codewithmosh.com/t/installing-backend/10576 "2022-02-10T06:29:49Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![RaviU](https://avatars.discourse-cdn.com/v4/letter/r/e495f1/32.png) [@RaviU](https://forum.codewithmosh.com/u/RaviU)\
**Post date:** [February 10, 2022, 6:29am UTC](https://forum.codewithmosh.com/t/installing-backend/10576/1 "2022-02-10T06:29:50Z")

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Good day,

I have been struggling to install npm packages for the ‘backend’ project in The Ultimate React Native Series: Advanced Concepts course.

I have the current latest version of node and npm (v16.14.0 and 8.4.1 repectively) installed.

While trying to install backend’s dependencies etc on command prompt with npm i , these two warnings appear :

a) the package-lock.json file was created with an old version of npm, so supplemental metadata must be fetched from the registry.

b) Unsupported engine :  
required: { node: ‘12.6.x’}  
current: { node ‘v16.14.0’, npm ‘8.4.1’ }

Thereafter, npm list shows that none of the dependecies were installed.

Would be most grateful if someone could help

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**Author:** ![eelsholz](https://avatars.discourse-cdn.com/v4/letter/e/439d5e/32.png) [@eelsholz](https://forum.codewithmosh.com/u/eelsholz)\
**Post date:** [February 15, 2022, 1:02am UTC](https://forum.codewithmosh.com/t/installing-backend/10576/2 "2022-02-15T01:02:10Z")

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Do you know what version of node and npm Mosh uses in the course? You might try using those.