The problem was solved by:

• Removing the mobile/android folder.

• Installing dependencies with Yarn in the root monorepo folder.

• Adding the problematic dependencies and doctor configs to the root package.json file.

• Configuring metro.config.js for the mobile app at the monorepo project's root level.

the metro.config.json:

const { getDefaultConfig } = require('expo/metro-config');
const path = require('path');

// Get the project root
const projectRoot = __dirname;
// Get the monorepo root
const monorepoRoot = path.resolve(projectRoot, '../..');

const config = getDefaultConfig(projectRoot);

// Configure for monorepo
config.watchFolders = [monorepoRoot];
config.resolver.nodeModulesPaths = [
  path.resolve(projectRoot, 'node_modules'),
  path.resolve(monorepoRoot, 'node_modules'),
];

module.exports = config;