Error in "/var/www/html/node_modules/gatsby-plugin-robots-txt/gatsby-node.js": Cannot find module 'fs/promises'

[emarubi]

Hi,
I'm trying to run a two-years old gatsby project, and I have this error on build:

`#14 0.657 $ gatsby build
#14 5.021 Environment set: production
success open and validate gatsby-configs - 0.131s

#14 7.253 ERROR
#14 7.253
#14 7.253 Error in "/var/www/html/node_modules/gatsby-plugin-robots-txt/gatsby-node.js":
#14 7.253 Cannot find module 'fs/promises'
#14 7.253 Require stack:
#14 7.253 - /var/www/html/node_modules/gatsby-plugin-robots-txt/gatsby-node.js
#14 7.253 - /var/www/html/node_modules/gatsby/dist/bootstrap/resolve-module-exports.js
#14 7.253 - /var/www/html/node_modules/gatsby/dist/bootstrap/load-plugins/validate.js
#14 7.253 - /var/www/html/node_modules/gatsby/dist/bootstrap/load-plugins/load.js
#14 7.253 - /var/www/html/node_modules/gatsby/dist/bootstrap/load-plugins/index.js
#14 7.253 - /var/www/html/node_modules/gatsby/dist/services/initialize.js
#14 7.253 - /var/www/html/node_modules/gatsby/dist/services/index.js
#14 7.253 - /var/www/html/node_modules/gatsby/dist/bootstrap/index.js
#14 7.253 - /var/www/html/node_modules/gatsby/dist/commands/build.js
#14 7.253 - /var/www/html/node_modules/gatsby-cli/lib/create-cli.js
#14 7.253 - /var/www/html/node_modules/gatsby-cli/lib/index.js
#14 7.253 - /var/www/html/node_modules/gatsby/dist/bin/gatsby.js
#14 7.253 - /var/www/html/node_modules/gatsby/cli.js
#14 7.253
This is my package.json

"scripts": {
"build": "gatsby build",
"develop": "gatsby develop",
"clean": "gatsby clean",
"lint": "eslint --fix src .js",
"start": "node server.js",
"serve": "gatsby serve",
"test": "echo "Write tests! -> https://gatsby.dev/unit-testing\"",
"storybook": "NODE_ENV=production start-storybook -s ./public -p 49999",
"storybook:build": "NODE_ENV=production build-storybook -c .storybook -o storybook_public/ -s ./static && cp -r public/static storybook_public"
},
"husky": {
"hooks": {
"pre-commit": "lint-staged"
}
},
"lint-staged": {
".js": [
"eslint --fix",
"git add"
]
},
"dependencies": {
"@babel/core": "^7.5.5",
"@babel/runtime": "^7.5.5",
"@bugsnag/js": "^6.3.2",
"@bugsnag/plugin-react": "^6.2.0",
"@storybook/addons": "^5.0.11",
"@storybook/components": "^5.0.11",
"autoprefixer": "^9.6.1",
"bugsnag": "^2.4.3",
"classnames": "^2.2.6",
"core-js": "^2",
"dotenv": "^8.0.0",
"dotenv-webpack": "^1.7.0",
"eslint-plugin-graphql": "^3.0.3",
"event-source-polyfill": "^1.0.5",
"express": "^4.17.1",
"gatsby": "^2.13.44",
"gatsby-image": "^2.2.7",
"gatsby-plugin-i18n": "^1.0.1",
"gatsby-plugin-jss": "^2.1.3",
"gatsby-plugin-manifest": "^2.2.13",
"gatsby-plugin-offline": "2.2.9",
"gatsby-plugin-react-helmet": "^3.1.2",
"gatsby-plugin-react-redux": "^1.0.10",
"gatsby-plugin-remove-trailing-slashes": "^2.1.4",
"gatsby-plugin-robots-txt": "^1.5.0",
"gatsby-plugin-sharp": "^2.2.17",
"gatsby-plugin-sitemap": "^2.2.3",
"gatsby-plugin-styled-jsx": "^3.1.2",
"gatsby-source-apiserver": "^2.1.3",
"gatsby-source-contentful": "^2.1.15",
"gatsby-source-filesystem": "^2.1.16",
"gatsby-transformer-sharp": "^2.2.11",
"graphql-tag": "^2.10.1",
"hoist-non-react-statics": "^3.3.0",
"intersection-observer": "^0.7.0",
"keyboard-focus": "^1.0.1",
"lodash": "^4.17.15",
"markdown-it": "^9.1.0",
"path-to-regexp": "^3.0.0",
"picturefill": "^3.0.3",
"postcss-js": "^2.0.2",
"prop-types": "^15.7.2",
"ptz-i18n": "^1.0.0",
"react": "^16.8.6",
"react-dom": "^16.8.6",
"react-helmet": "^5.2.1",
"react-jss": "^10.0.0-alpha.23",
"react-redux": "^7.1.0",
"redux": "^4.0.4",
"redux-act": "^1.7.7",
"redux-devtools-extension": "^2.13.8",
"redux-saga": "^1.0.5",
"regenerator-runtime": "^0.13.2",
"seamless-immutable": "^7.1.4",
"styled-jsx": "^3.2.1",
"webpack-bugsnag-plugins": "^1.4.0"
},
"devDependencies": {
"@babel/plugin-proposal-decorators": "^7.4.4",
"@babel/plugin-proposal-optional-chaining": "^7.2.0",
"@storybook/addon-a11y": "^5.0.10",
"@storybook/addon-actions": "^5.0.3",
"@storybook/addon-console": "^1.1.0",
"@storybook/addon-notes": "^5.0.3",
"@storybook/addon-viewport": "^5.0.10",
"@storybook/react": "5.2.0-alpha.30",
"@storybook/theming": "^5.0.5",
"babel-loader": "^8.0.6",
"babel-preset-gatsby": "^0.2.8",
"eslint-config-airbnb": "^17.1.1",
"eslint-config-prettier": "^6.0.0",
"eslint-config-react-app": "^4.0.1",
"eslint-plugin-prettier": "^3.0.1",
"eslint-plugin-react-hooks": "^1.6.1",
"husky": "^3.0.2",
"lint-staged": "^9.2.1",
"prettier": "^1.18.2",
"storybook-addon-react-docgen": "^1.2.1"
}
`
I know that dependencies need to be updated, but I was told by CTO to not make any updates for the moment.
I'm running node 12.20 in a docker container.

Thanks for your help!