Sends a raw transaction with web3 1.2.2, ethereumjs-tx, and Infura

sendRawTransaction.js

# FOR ETHER ->


web3.eth.getTransactionCount(this.address).then(txCount => {
        const txData = {
          nonce: web3.utils.toHex(txCount),
          gasLimit: web3.utils.toHex(100000),
          gasPrice: web3.utils.toHex( YOUR_GAS_PRICE), // 10-15 gwei should be ok
          to: this.toAddress,
          from: this.address,
          value: web3.utils.toHex(
            web3.utils.toWei("0.0001", "ether")  // amount you want to send
          )
        };

       const transaction = new Tx(rawTx, { chain: "rinkeby" }); //transaction = new Tx(txData, {'chain':'mainnet'});
        transaction.sign(
          new Buffer(this.account.privateKey.substring(2), "hex")  // remove .substring(2) if you get errors
        );
        var self = this;
        web3.eth
          .sendSignedTransaction("0x" + transaction.serialize().toString("hex"))
          .on("transactionHash", function(txHash) {
            // show tx hash ?
          })
          .on("receipt", function(receipt) {
            console.log("receipt:" + receipt);
          })
          .on("confirmation", function(confirmationNumber, receipt) {
            if (confirmationNumber >= 1) {
              // message that tx went ok
            }
          })
          .on("error", function(error) {
            console.log("error sending ETH", error);
          });
      });

# FOR ERC20 -------__>

 web3.eth.getTransactionCount(this.address).then(nonce => {
        var contract = new web3.eth.Contract(
          erc20TokenABI,
          Constants.CONTRACT_ADDRESS
        );

        var tokenAmountFull = Number(this.amountTokens) * Math.pow(10, 18); // 18 decimals, hardcoded
        let data = contract.methods
          .transfer(this.toAddress, tokenAmountFull.toString())
          .encodeABI();
        let rawTx = {
          nonce: web3.utils.toHex(nonce),
          gasLimit: web3.utils.toHex(100000),
          gasPrice: web3.utils.toHex(YOUR_GAS_PRICE), // 10-15 gwei should do it
          to: Constants.CONTRACT_ADDRESS,
          value: "0x00",
          data: data
        };

        const transaction = new Tx(rawTx, { chain: "mainnet" }); //transaction = new Tx(txData, {'chain':'rinkeby'});
        transaction.sign(new Buffer(this.privateKey, "hex"));
        var self = this;
        web3.eth
          .sendSignedTransaction("0x" + transaction.serialize().toString("hex"))
          .on("transactionHash", function(txHash) {
            self.txHash = txHash;
          })
          .on("receipt", function(receipt) {
            console.log("receipt:" + receipt);
          })
          .on("confirmation", function(confirmationNumber, receipt) {
            if (confirmationNumber >= 1) {
              self.isTxConfirmed = true;
            }
          })
          .on("error", function(error) {
            console.log("error sending erc20 token", error);
            self.$toast.error("error sending token.");
          });

Hello, i get an error: throw new Error('Provided address "'+ address +'" is invalid, the capitaliza
tion checksum test failed, or its an indrect IBAN address which can't be conver
ted.');
^

Error: Provided address "undefined" is invalid, the capitalization checksum test
failed, or its an indrect IBAN address which can't be converted.

ethereum blockchain has nothing to do with IBANs...the error does not come from this script, but with something else.