Newbie Question - Getting -301 error trying to read a value from my Channel | ESP Wi-Fi | Forum

Admittedly this is actually my first project with Thingspeak. .

What I would like to do is use my Wemos D1 (ESP8266) to read a value from my Thingspeak channel and display it on a LED display.

I coded up the api call in my code based on a few examples that I was able to search for, however I keep getting a -301 error when I try to read the value from my channel - - basically it seems that I am not able to access the Thingspeak site.

In the forum I see lots of questions around -301 errors on writing to Thinkspeak, but nothing pops up about having this issue reading a value.

My call to Thinkspeak is set up this way:

#include "ThingSpeak.h"
….

unsigned long myChannelNumber = 763419;
const char * myReadAPIKey = "ORD6QZS551SA90FG";
…

void setup() {
Serial.begin(115200);
ThingSpeak.begin(client);
….

void loop() {

// Read the latest value from field 1 of your channel
readValue = ThingSpeak.readIntField(myChannelNumber, 1, myReadAPIKey);
Serial.print("readValue = "); // debugging instrument
Serial.println(readValue); // debugging instrument
statusCode = ThingSpeak.getLastReadStatus();
Serial.println("Problem reading channel. HTTP error code " + String(statusCode));

When I execute the code, I get this output in the Serial Monitor:

WiFi connected
readValue = 0
Problem reading channel. HTTP error code -301

I suspect I am missing something really "obvious" - any suggestions that I can try?

Thanks !!!!!