Unable to build PDF in GitHub Actions (but works locally)

[ronaldtse]

Not sure why?

https://github.com/metanorma/mn-samples-plateau/actions/runs/9217100051/job/25358519329

[FATAL] "fo:flow" is missing child elements. Required content model: marker* (%block;)+ (See position 7:4975)
Can't obtain table's widths information: javax.xml.transform.TransformerException: org.apache.fop.fo.ValidationException: null:7:4975: "fo:flow" is missing child elements. Required content model: marker* (%block;)+ (See position 7:4975)
[INFO] XSL-FO file preparation...
Transforming to PDF...
Rendered page #1.
Rendered page #2.
Rendered page #3.
"fo:flow" is missing child elements. Required content model: marker* (%block;)+ (See position 7:4977)
org.apache.fop.fo.ValidationException: null:7:4977: "fo:flow" is missing child elements. Required content model: marker* (%block;)+ (See position 7:4977)
javax.xml.transform.TransformerException: org.apache.fop.fo.ValidationException: null:7:4977: "fo:flow" is missing child elements. Required content model: marker* (%block;)+ (See position 7:4977)
	at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:502)
	at org.metanorma.fop.PDFGenerator.runFOP(PDFGenerator.java:610)
	at org.metanorma.fop.PDFGenerator.convertmn2pdf(PDFGenerator.java:458)
	at org.metanorma.fop.PDFGenerator.process(PDFGenerator.java:295)
	at org.metanorma.fop.mn2pdf.main(mn2pdf.java:338)
Caused by: org.apache.fop.fo.ValidationException: null:7:4977: "fo:flow" is missing child elements. Required content model: marker* (%block;)+ (See position 7:4977)
	at org.apache.fop.events.ValidationExceptionFactory.createException(ValidationExceptionFactory.java:38)
	at org.apache.fop.events.EventExceptionManager.throwException(EventExceptionManager.java:58)
	at org.apache.fop.events.DefaultEventBroadcaster$1.invoke(DefaultEventBroadcaster.java:173)
	at com.sun.proxy.$Proxy8.missingChildElement(Unknown Source)
	at org.apache.fop.fo.FONode.missingChildElementError(FONode.java:608)
	at org.apache.fop.fo.pagination.Flow.endOfNode(Flow.java:93)
	at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilder.java:390)
	at org.apache.fop.fo.FOTreeBuilder$3.run(FOTreeBuilder.java:207)
	at org.apache.fop.fo.FOTreeBuilder$3.run(FOTreeBuilder.java:204)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:203)
	at org.apache.xalan.transformer.TransformerIdentityImpl.endElement(TransformerIdentityImpl.java:1102)
	at java.xml/com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:610)
	at java.xml/com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:184)
	at java.xml/com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:351)
	at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2710)
	at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:605)
	at java.xml/com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:112)
	at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:534)
	at java.xml/com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:888)
	at java.xml/com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:824)
	at java.xml/com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
	at java.xml/com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1216)
	at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:485)
	... 4 more
---------

[Intelligent2013]

@ronaldtse the latest mn2pdf is 1.89, but 1.87 is using in GH:
java -Xss10m -Xmx3g -Djava.awt.headless=true -Duser.home=/github/home -jar /usr/local/bundle/gems/mn2pdf-1.87.1/lib/../bin/mn2pdf.jar

[Intelligent2013]

@CAMOBAP in the https://github.com/metanorma/mn-samples-plateau/blob/main/.github/workflows/docker.yml there is an instruction to install the metanorma-plateau gem:

      - name: Setup Flavor
        uses: actions-mn/setup-flavors@v1
        with:
          extra-flavors: plateau
          github-pakages-token: ${{ secrets.METANORMA_CI_PAT_TOKEN }}
          use-bundler: true

But we need to install the latest mn2pdf and isodoc gems also. Is there any way to do this?

I've tried to add this:

      - name: Install latest mn2pdf
        run: bundle add mn2pdf

or

      - name: Install latest mn2pdf
        run: gem install mn2pdf

but again the version 1.87.1 is using in the Metanorma generate site step:
java -Xss10m -Xmx3g -Djava.awt.headless=true -Duser.home=/github/home -jar /usr/local/bundle/gems/mn2pdf-1.87.1/lib/../bin/mn2pdf.jar --xml-file

[ronaldtse]

I think instructions for overriding gems in the docker container will be useful in the website

[CAMOBAP]

Because we use docker workflow which has 'pre-installed' gems, it will use mn2pdf that was installed during docker build

We have a dedicated action to override gems that are delivered with the docker container:

- uses: metanorma/ci/docker-gem-install@main

Just add required gems into Gemfile in the repo

I think instructions for overriding gems in the docker container will be useful in the website

Good Idea but to be honest I'm not really understand the issue why we need a such workaround to install gems (to me it's important to describe the root of the issue). Let me know if you wanna to dig it and write a post about it

[Intelligent2013]

@CAMOBAP thanks!

[Intelligent2013]

docker.yml and Gemfile updated.