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Replies for: The part you specifically need is: <!doctype html> ^ SyntaxError: Unexpected token < in JSON at position 0 You're getting an HTML s...

Another occurrence of JSON.parse() is in crypto/app/pubsub.js file in listener() method.
Following is listener() method.

listener() {
        return {
            message: messageObject => {
                const { channel, message } = messageObject;

                console.log(`Message received. Channel: ${channel}. Message: ${message}`);
                const parsedMessage = JSON.parse(message);

                switch(channel) {
                    case CHANNELS.BLOCKCHAIN:
                        this.blockchain.replaceChain(parsedMessage, true, () => {
                            this.transactionPool.clearBlockchainTransactions({
                                chain: parsedMessage 
                            });
                        });
                        break;
                    case CHANNELS.TRANSACTION:
                        if (!this.transactionPool.existingTransaction({
                            inputAddress: this.wallet.publicKey
                        })) {
                            this.transactionPool.setTransaction(parsedMessage);
                        }
                        break;
                    default:
                        return;
                }
            }
        }
    }