Falied to load resource files of Oracle APEX plugin I've installed a plugin in APEX, but when I've tried to use it on a page, I've got some nasty errors and page not working properly.

The files are present in the plugin settings:



But, as you can see below, they are not being loaded for some reason. I get 404 errors instead.


I have ORDS running and APEX 19 installed on DB 19c XE.

What could be causing this? Wrong ORDS configuration maybe? How to fix it?
After APEX upgrade from one version to another you should recompile i.war by running java -jar ords.war validate --database apex. java -jar ords.war static could also be useful.

For debug it is convinient to edit ORDS config file defaults.xml with these strings:

&lt;entry key="debug.debugger"&gt;true&lt;/entry&gt;
&lt;entry key="debug.printDebugToScreen"&gt;true&lt;/entry&gt;


Don't forget to set them false on production.