Why do I get a com.mathwo​rks.html.B​rowserCrea​tionExcept​ion error when running certain MATLAB commands on Linux?

I get a Java error such as the following every time I call 'uisetcolor', 'webmap', or any other commands that use the JxBrowser on my Linux machine. It always seems to be a "com.mathworks.html.BrowserCreationException" error. How can I fix this?

e.g.

>> uisetcolor 
Error using matlab.ui.internal.dialog.WebColorChooser/show (line 74) 
Java exception occurred: 
com.mathworks.html.BrowserCreationException: com.mathworks.html.BrowserCreationException: com.teamdev.jxbrowser.chromium.internal.ipc.IPCException: IPC process 
exited. Exit code: 127 
at com.mathworks.mlwidgets.html.LightweightChromiumBrowserBuilder.buildBrowser(LightweightChromiumBrowserBuilder.java:52) 
at com.mathworks.mlwidgets.html.LightweightBrowserBuilder.buildBrowser(LightweightBrowserBuilder.java:189) 
Caused by: com.mathworks.html.BrowserCreationException: com.teamdev.jxbrowser.chromium.internal.ipc.IPCException: IPC process exited. Exit code: 127 
at com.mathworks.html.jxbrowser.chromium.LightweightChromiumBrowser.<init>(LightweightChromiumBrowser.java:35) 
at com.mathworks.mlwidgets.html.LightweightChromiumBrowserBuilder.buildBrowser(LightweightChromiumBrowserBuilder.java:40) 
... 1 more 
Caused by: com.teamdev.jxbrowser.chromium.internal.ipc.IPCException: IPC process exited. Exit code: 127 
at com.teamdev.jxbrowser.chromium.internal.ipc.d.run(Unknown Source) 
at java.lang.Thread.run(Thread.java:748) 

Error in uisetcolor_helper>showDialog (line 67) 
ccDialog.show; 

Error in uisetcolor_helper (line 12) 
selectedColor = showDialog(ccDialog); 

Error in uisetcolor (line 37) 
selectedColor = uisetcolor_helper(varargin{:});

Answer 1

[MathWorks Support Team]

1) Please make sure you are using MATLAB on a supported version of Linux, as “minimal” or “core” installations of Linux may lack the necessary software packages required to run MATLAB.

https://www.mathworks.com/support/requirements/matlab-system-requirements.html

2) Please try installing any missing JxBrowser dependencies. You can see any missing dependencies by running `ldd` on the 'jxbrowser-chromium' executable that ships with MATLAB.

e.g.

>> cd(fullfile(matlabroot,'sys','jxbrowser-chromium','glnxa64','chromium'))
>> !ldd jxbrowser-chromium | grep -i found
libgconf-2.so.4 => not found

This example indicates that we are missing the "libgconf-2-4" dependency, which can be installed with a package manager such as `apt`.

NOTE: The exact location of the 'jxbrowser-chromium' executable may be different depending on the version of MATLAB you are using. The example above is from R2019a.

See the link below for another example of using `ldd` and installing dependencies.

https://www.mathworks.com/matlabcentral/answers/423210-why-is-matlab-help-browser-showing-unformatted-text-on-linux-r2018b