Matic Mumbai deployment failed at migration with Replay-Protected (EIP-155) error

Question

I'm looking to deploy dApp onto Polygon's Matic Mumbai test network, but I keep getting errors. Contracts deploy well on all Ethereum networks and I've made sure to have some MATIC (just in case even though it's not asking for any). Here's what I get:

Compiling your contracts...
=============================

all good no issues. then starts migration as per usual:

  Starting migrations...
======================
> Network name:    'matic'
> Network id:      80001
> Block gas limit: 20000000 (0x1312d00)


1_initial_migration.js
======================

   Deploying 'Migrations'
   ----------------------

Error:  *** Deployment Failed ***

"Migrations" -- only replay-protected (EIP-155) transactions allowed over RPC.

in terminal i'm following their "how to" guide verbatim:

Truffle:

matic: {
      provider: () =>
        new HDWalletProvider(mnemonic, `https://rpc-mumbai.matic.today`),
      network_id: 80001,
      confirmations: 2,
      timeoutBlocks: 200,
      skipDryRun: true,
    },

and terminal:

truffle migrate --network matic

Any ideas of what I'm doing wrong and how to fix the issue? Thank you.

Answer 1

I ran into the same issue, and thanks to the folks here:

https://github.com/trufflesuite/truffle/issues/3913

I figured out that I just needed to update this NPM package:

"truffle-hdwallet-provider": "^1.0.17"

To be:

"@truffle/hdwallet-provider": "^1.4.0"