[libreoffice-users] DisposedException at queryInterface

I use Ubuntu 16.04, Tomcat 8, PHP 7, JavaBridge 6.2.1, Libreoffice
5.14. Below is my codings.

$ComponentContext=Java("com.sun.star.comp.helper.Bootstrap")->bootstrap(array("--nologo","--nodefault","--norestore","--nolockcheck","--headless"));
$ServiceManager=$ComponentContext->getServiceManager();
$Desktop=$ServiceManager->createInstanceWithContext("com.sun.star.frame.Desktop",$ComponentContext);

Everything is still OK...

$ComponentLoader=Java("com.sun.star.uno.UnoRuntime")->queryInterface(Java("com.sun.star.frame.XComponentLoader")->class,$Desktop);

Here I got "com.sun.star.lang.DisposedException".

I run "ps -aux" and found that soffice was still running.

tomcat8    941  0.0  0.0 206168  3372 ?        Sl  
10:24   0:00 /usr/lib/libreoffice/program/oosplash
--accept=pipe,name=uno6335492298840663686;urp; --nologo --nodefault
--norestore --nolockcheck --headless
tomcat8    982  0.0  0.3 923312 55924 ?        Sl  
10:24   0:00 /usr/lib/libreoffice/program/soffice.bin
--accept=pipe,name=uno6335492298840663686;urp; --nologo --nodefault
--norestore --nolockcheck --headless
tomcat8    983  0.0  0.0      0     0 ?       
Z    10:24   0:00 [soffice.bin] 

How could I find out what's wrong?

Brooke


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