Apache FOP errors logged after Mendix 10 upgrade

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Post Mendix 10 upgrade we are seeing lots of these. Not much else to go on.   2025-04-28 10:25:10.087 ERROR - org.apache.fop.layoutmgr.AbstractBaseLayoutManager: Cannot find LM to handle given FO for LengthBase. (fo:table-cell, location: -1:-1)   Apparently  Mendix does use Apache FOP (Formatting Objects Processor) under the hood for PDF document generation in Document Templates.   Anyone have any experience of this
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I had something similar in a project after I upgraded the Rich Text widget. The HTML it was generating was adding additional attributes to tags, which worked when shown on a page, but was breaking document generation. My quick fix was to downgrade to an older version of the Rich Text widget. I meant to go back when I had time to see if there was a better solution, but it's still on my todo list.

 

I hope this helps.

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