The error message 'cannot find module 'redis'' indicates that the Node.js application is unable to locate the Redis module in the system. The Redis module may not be installed or correctly referenced in the Node.js project. Redis is a widely used open-source data structure store that operates as a database, cache, and message broker entirely in-memory.
To fix this error, there are various potential solutions available. Firstly, ensure that Redis is installed on your system by using
npm install redis command in the terminal. In case Redis has already been installed, use
npm update redis command to upgrade it to the latest version. After installing Redis, confirm that you have included the
const redis = require('redis') line of code at the beginning of your Node.js file to allow Node.js to locate the Redis module.
If the issue persists, try clearing the npm cache by running the command
npm cache clean --force followed by reinstallation of Redis with
npm install redis --save. On the other hand, you can also attempt to remove the
node_modules directory in the project folder and run
npm install to reinstall all dependencies, including Redis. Finally, if none of these remedies work, double-check that there are no spelling mistakes in the import statement for the Redis module or any syntax errors in the Node.js code.