chainbridge-deploy doesn't work properly

[KJHBC]

In chainbridge-deploy,

cb-sol-cli deploy --all --chainId 100 --url https://https://ropsten.infura.io/v3/1f8be7d6cbd140cb9a2a3b1dd04d0bc3 
--privateKey <pk> --relayers <addr> --relayerThreshold <relayerThreshold>

This command is not working after emitting message
Deploying contracts...

or

error message
e: Error: replacement fee too low (version=4.0.46).

It's working when I give --url option to polygon local chain RPC url(localhost).

Could I use ETH testnet RPC (e.g. Ropsten, Kovan) to deploy and build cross-chain system with chainbridge?

Originally posted by @KJHBC in #785

Trying to replace url https://https://ropsten.infura.io/v3/1f8be7d6cbd140cb9a2a3b1dd04d0bc3
to https://rpc-mumbai.matic.today,
I got new Error

{
  e: Error: invalid response - 404
      at request.onreadystatechange (/Users/kimjaehwan/chainbridge-deploy/cb-sol-cli/node_modules/ethers/utils/web.js:84:29)
      at exports.XMLHttpRequest.dispatchEvent (/Users/kimjaehwan/chainbridge-deploy/cb-sol-cli/node_modules/xmlhttprequest/lib/XMLHttpRequest.js:591:25)
      at setState (/Users/kimjaehwan/chainbridge-deploy/cb-sol-cli/node_modules/xmlhttprequest/lib/XMLHttpRequest.js:610:14)
      at IncomingMessage.<anonymous> (/Users/kimjaehwan/chainbridge-deploy/cb-sol-cli/node_modules/xmlhttprequest/lib/XMLHttpRequest.js:447:13)
      at IncomingMessage.emit (node:events:539:35)
      at endReadableNT (node:internal/streams/readable:1344:12)
      at process.processTicksAndRejections (node:internal/process/task_queues:82:21) {
    statusCode: 404,
    responseText: '{"text":"The requested URL was not found on this server.","code":404}',
...
}

It seems like RPC url is correct (both ETH ropsten and Polygon mumbai network) but mumbai testnet RPC does not work properly.

Also, replacement error on ETH RPC seems like problem related to nonce or gas while sending transaction.

How could I solve this problem?