Impossibility to install dependancies

[NellyDubois]

I create a new Gatsby project (with JS, tailwind). I would like to install other dependancies like gatsby-plugin-react-helmet for example.
Unfortunately I have error messages :

I've tried

npm audit fix

npm audit fix --force

npm update

but unfortunately it doesn't solve the problems.
I've tried to delete package.lock.json and node modules before reinstalling nm but it doesn't change anything...I have alos tried
npm install --legacy-peer-deps

My version of Gatsby is 5.13.5, Node 20.15.0, npm 10.7.0

How could I solve these issues given that I have other dependancies to install bacuse I woulmd like to maigrate my React website to Gatsby.

Thanks in advance for your help

[808vita]

Gatsby comes 5 comes with head api , may be migrate (if it is a viable option).
https://www.gatsbyjs.com/docs/reference/built-in-components/gatsby-head/