Loading build file with javascript task fails with "Unable to create javax script engine for javascript"

[cdokolas]

Opening a build file that includes a javascript task (using <scriptdef>), fails with "Unable to create javax script engine for javascript".

Sample output (from error dialog details):

Cannot open graph
Cannot open project file C:\source\trunk\src\build\build.xml
  Cannot open project file C:\source\trunk\src\build\build.xml
  Cannot open project file C:\source\trunk\src\build\build.xml
  The following error occurred while executing this line:
C:\source\trunk\src\build\build-common\build-common.xml:62: Unable to create javax script engine for javascript
  The following error occurred while executing this line:
C:\source\trunk\src\build\build-common\build-common.xml:62: Unable to create javax script engine for javascript
  Unable to create javax script engine for javascript
  Unable to create javax script engine for javascript

I tried with Java 17 (OpenJDK 64-Bit Server VM Temurin-17+35 (build 17+35, mixed mode, sharing)) and Java 1.8 (OpenJDK 64-Bit Server VM (AdoptOpenJDK)(build 25.282-b08, mixed mode))

Also note that the javascript task definition and the first execution is in an "included" ant file.

[cdokolas]

Since opening this issue, I've again had to open such a build file (probably the same) again today. After trying to find a solution, I found my own opened issue (forgotten even by me) and noticed that there isn't even one suggestion, or even a workaround all this time.

Can you please take a look again? Thanks!