Types have separate declarations of a private property 'getCancellationPromise'.

[developer-otto]

node v20.15.1
pnpm V8.14.0
next v14.0.4
@solana/web3.js v1.95.3

When I execute pnpm build it throws the error:

[steveluscher]

This is owing to the fact that you have two copies of @solana/web3.js in your project (search term: dual package hazard). Check the lockfile of your project to figure out why, and where the second version is coming from.

[developer-otto]

Just installing @solana/web3.js and @project-serum/anchor in my project will cause this problem. How can I solve it?

[Manice18]

Just installing @solana/web3.js and @project-serum/anchor in my project will cause this problem. How can I solve it?

I was having the same issue with yarn so I just removed the yarn lock file and did a fresh install with npm.
It seems to be working fine now.

[github-actions]

Hi @developer-otto,

Thanks for your question!

We want to make sure to keep signal strong in the GitHub issue tracker – to make sure that it remains the best place to track issues that affect the development of the Solana JavaScript SDK itself.

Questions like yours deserve a purpose-built Q&A forum. Unless there exists evidence that this is a bug with the Solana JavaScript SDK itself, please post your question to the Solana Stack Exchange using this link: https://solana.stackexchange.com/questions/ask

---

This automated message is a result of having added the ‘question’ tag.

[github-actions]

Because there has been no activity on this issue for 7 days since it was closed, it has been automatically locked. Please open a new issue if it requires a follow up.