Can not sign transactions for account test.near on network sandbox, no matching key pair found in InMemorySigner

[antonio-ivanovski]

I am having issue while using the library. Uppon invoking rootAccount.createAccount(...) (or any of the other create account methods) I get error of: Can not sign transactions for account test.near on network sandbox, no matching key pair found in InMemorySigner(UnencryptedFileSystemKeyStore(/private/var/folders/_3/ggprgl2s3dg02ll3pgymf2280000gn/T/sandbox/81264186-ccb1-4f88-80c7-b932a3b1a62b))

This is the code snippet producing this

const nearRpcUrl = `http://127.0.0.1:${port}`;
const worker = await Worker.init({
// config needed until https://github.com/near/workspaces-js/pull/200 merged
port,
rpcAddr: nearRpcUrl,
});

console.log('accountId', worker.rootAccount.accountId); //  accountId test.near
console.log('availableBalance', await worker.rootAccount.availableBalance()); // availableBalance <BN: 314dc5f1d5bbc198ca396ebf3800>
console.log('exists', await worker.rootAccount.exists()); //  exists true

await worker.rootAccount.createAccount('alice'); // throws

My environment:

• MacOs 13.3.1 (22E261)
• Node v18.16.0
• workspace-js v3.3.0

What I have tried

• Changing the directory of where the sandbox directory
• Validating in the sandbox directory that indeed has the private/public key. Yes, they are there. Even for alice.test.near even though not fully created.
• Try with Node v16
• Wait 10 seconds after init of worker , before trying createAccount(...)
• Try without the config (it never goes past availableBalance())
• Tested on `simple-project' example, fails again.

[antonio-ivanovski]

Only thing that has worked so far is changing the port number on each test run. If the test run uses port number that is previous used, it will fail with the above error.

[fospring]

Only thing that has worked so far is changing the port number on each test run. If the test run uses port number that is previous used, it will fail with the above error.
@ToTeTo
every running task should use different port, for each default config it will get port by nextPort:

  static async defaultConfig(): Promise<Config> {
    const port = await SandboxServer.nextPort();
    return {
      ...this.clientConfig,
      homeDir: SandboxServer.randomHomeDir(),
      port,
      rm: false,
      refDir: null,
      rpcAddr: `http://localhost:${port}`,
    };
  }

https://github.com/near/workspaces-js/blob/main/packages/js/src/worker.ts#L108C7-L108C7
I think you just need to init worker without params:

const worker = await Worker.init();