MATLAB ANALYSIS run Successfully on ThingSpeak, BUT always generates Server Error 500, so doesn't send email

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Gordon Eden
Gordon Eden 2024-9-30
回答： Vinod 2024-9-30
The error is:
"Failed to send alert: The server returned the status 500 with message "Internal Server Error" in response to the request to URL https://api.thingspeak.com/alerts/send."
The message says MATLAB Analysis ran successfully, so the code is good, but never sends the email because of the server error.
Simple code from examples:
% Catch errors so the MATLAB code does not disable a TimeControl if it fails
try
webwrite(alertUrl , "body", alertBody, "subject", alertSubject, options);
catch someException
fprintf("Failed to send alert: %s\n", someException.message);
end
Where to go from here?

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回答（1 个）

Vinod
Vinod 2024-9-30
Here's the code I used to test an alert email.
% Send ThingSpeak Alert
alertURL = "https://api.thingspeak.com/alerts/send";
apiKey = '***INSERT_YOUR_ALERT_API_KEY***';
options = weboptions("HeaderFields", ["ThingSpeak-Alerts-API-Key", apiKey]);
alertBody = sprintf("Testing ThingSpeak Alert.");
alertSubject = sprintf("Alerts are working");
webwrite(alertURL, "body", alertBody, "subject", alertSubject, options);
Can you modify and confirm it works for you?

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