Fix error message wording in builders/latex/transforms.py

And make it and the two other ones there translatable strings.
Using .format for the f-string.

1 files changed, 5 insertions, 3 deletions

diff --git a/sphinx/builders/latex/transforms.py b/sphinx/builders/latex/transforms.py
index df678d91f..bd295de12 100644
--- a/sphinx/builders/latex/transforms.py
+++ b/sphinx/builders/latex/transforms.py
@@ -18,6 +18,7 @@ from sphinx.builders.latex.nodes import (
     thebibliography,
 )
 from sphinx.domains.citation import CitationDomain
+from sphinx.locale import __
 from sphinx.transforms import SphinxTransform
 from sphinx.transforms.post_transforms import SphinxPostTransform
 from sphinx.util.nodes import NodeMatcher
@@ -110,8 +111,9 @@ class ShowUrlsTransform(SphinxPostTransform):
         try:
             source = node['source']  # type: ignore[index]
         except TypeError:
-            raise ValueError('Failed to get a docname!') from None
-        raise ValueError(f'Failed to get a docname for source {source!r}!')
+            raise ValueError(__('Failed to get a docname!')) from None
+        raise ValueError(__('Failed to get a docname '
+                            'for source {source!r}!').format(source=source))
 
     def create_footnote(
         self, uri: str, docname: str,
@@ -471,7 +473,7 @@ class LaTeXFootnoteVisitor(nodes.NodeVisitor):
             if docname == footnote['docname'] and footnote['ids'][0] == node['refid']:
                 return footnote
 
-        raise ValueError('No footnote not found for given reference node %r' % node)
+        raise ValueError(__('No footnote was found for given reference node %r') % node)
 
 
 class BibliographyTransform(SphinxPostTransform):