migrate to ethers

[zeroxbt]

No description provided.

[NZT48]

Let's first test out and fix connecting to WSS blockchain endpoint. I am getting this errors when I try:

Error: could not coalesce error (error={ "code": -32601, "message": "Method not found" }, payload={ "id": 27, "jsonrpc": "2.0", "method": "eth_subscribe", "params": [ "newHeads" ] }, code=UNKNOWN_ERROR, version=6.7.0)
    at makeError (/ethers/lib.commonjs/utils/errors.js:125:21)
    at WebSocketProvider.getRpcError (/ethers/lib.commonjs/providers/provider-jsonrpc.js:650:41)
    at /ethers/lib.commonjs/providers/provider-jsonrpc.js:268:45
    at processTicksAndRejections (node:internal/process/task_queues:96:5) {
  code: 'UNKNOWN_ERROR',
  error: { code: -32601, message: 'Method not found' },
  payload: {
    method: 'eth_subscribe',
    params: [ 'newHeads' ],
    id: 27,
    jsonrpc: '2.0'
  }
}

[NZT48]

Comment left to check wss connection