Error using strjoin when sending request URI

I've tried reproducing this example: https://fr.mathworks.com/help/matlab/ref/matlab.net.http.requestmessage.send.html but get an 'Error using strjoin' message. Any help in tracking down what I'm doing wrong is much appreciated.

>> request = matlab.net.http.RequestMessage;

>> uri = matlab.net.URI('https://www.mathworks.com/support/contact_us');

>> resp = send(request, uri)

Error using strjoin

Unsupported input: string

Error in matlab.net.URI/get.EncodedPath (line 514)

str = strjoin(path, '/');

Error in matlab.net.URI/string (line 680)

path = obj.EncodedPath;

Error in matlab.net.URI/char (line 696)

str = string(obj);

Error in matlab.net.http.RequestMessage>getProxySettings (line 2133)

proxyInfo = matlab.internal.webservices.getProxyInfo(char(uri));

Error in matlab.net.http.RequestMessage/send (line 405)

[proxyURI, username, password] = getProxySettings(createURIFromInput(uri));

>>

Answer 1

[埃博拉酱]

It looks like your version of MATLAB is too old and doesn't support string types yet. It is recommended to update to the latest version.

[Edward]

I'm not quite sure what you mean. I am using R2022a, which clearly supports string types. Besides, my colleagues also use R2022a and don't have this error, which is why we are at a loss to explain why it fails for me.

>> test = "someString";

>> class(test)

ans =

'string'

[埃博拉酱]

Then please check to see if there is an Update that can be installed. Even the same version of MATLAB may have bug fixes in some Updates. At the same time, you can also check whether your strjoin supports string input.

[Edward]

I see thanks, you are right my strjoin does not support string inputs, and got the same error (unsupported input: string) when I tried checking for updates. I will try with a clean re-installation of the latest version. Thanks for your help.