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How to Fix “The Upstream Dependency Conflict Installing NPM Packages”?

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Hello everyone! Today, we shall continue a new mistake that we made yesterday. That’s “The upstream dependency conflict when installing NPM packages,” in case you were wondering. Because Node is such a sophisticated yet practically empty module system, you should know that when we use Node.js, we almost immediately need to install additional modules (libraries). Therefore, we must install different modules for most of our operations. Using the NPM tool is a pretty straightforward process. I hope you will be able to fix the problem that was just mentioned and have a deeper comprehension of how NPM operates.

What exactly is “The upstream dependency conflict installing NPM packages”?

An example of this error has been provided by a coder below. They were notified that there was a dependency tree error in the program while they were in the process of setting up vue-mapbox mapbox-gl on NPM.

What’s the Reason for this Error?

If you are in the situation described above, we have reason to believe that there is a defect caused by the peer dependency of npm version 7 (the latest version is still beta).

Fixing the NPM upstream dependency conflict

To fix “the upstream dependency conflict installing NPM packages” I have some suggestions for how to fix this. Choose the best way for you based on how you want to approach the problem.

Solution 1: 

You can try to run again by entering the following command on the command line: npm install –legacy-peer-deps.

Solution 2: Adding force

Import the following line:

npm install –force

Solution 3: Performing an npm update and an audit repair

Execute the following command:

Solution 4:

Alternately, you might try going through these motions:

  • Delete the file that is named package-lock.json.
  • Make changes to the package.json file, making sure to bring the version number up to date following the information supplied by the peer dependence.
  • Try npm install or npm udpate.


When you run into the error “The upstream dependency conflict installing NPM packages,” the technique to handle it has been provided for you in the article that you just read. I hope this will help you locate the mistake and get the project back up and running as soon as possible. If you continue to run into issues that are difficult to resolve, please get in touch with us so that we can provide a prompt solution. I am appreciative of your reading!