Please confirm that an empty .bib file: projects/2.3.3-MathLibs/2.3.3.14-ALExa-ForTrilinos/2.3.3.14-ForTrilinos.bib is OK.
The recent ForTrilinos PR to the CAR added a path to a new .bib file for ForTrilinos. However, the file was not committed.
I added an empty version of this file so that the document would build. But there seem to be no missing references, so it is not clear the file is needed.
If you intended to submit a non-empty .bib file, please submit a new PR. Also, please make sure the document builds before your commit.