Error in URI function

I have the following code.

import matlab.net.*
import matlab.net.http.*                                    %importing in the loop to avoid connection error
import matlab.net.http.io.*
params = {'input' username};
header = HeaderField('accept', '*/*');
uri = URI('http://api.xyz.com/test', QueryParameter(params'));
body = FileProvider();
response = RequestMessage('post', header, body).send(uri.EncodedURI);

but I am getting the following error, what could be the reason, how can I remove this error.

Error using strsplit

Too many input arguments.

Error in matlab.net.URI/set.Path (line 432)

obj.Path = strsplit(string(value), '/', 'CollapseDelimiters', false);

Error in matlab.net.URI/parse (line 1202)

obj.Path = parts.Path;

Error in matlab.net.URI (line 874)

obj = obj.parse(dest, literal);

Error in username_script (line 51)

uri = URI('http://api.xyz.com/test', QueryParameter(params'));

[Walter Roberson]

Which MATLAB release are you using?