Running a migration on a site it fails to convert a large proportion of images from a D7 site that were embedded in the body like this:
<p><a href="https://example.com" target="_blank"><img alt="" src="/files/users/7438/2014-4/file_name.jpg" /></a></p>
or
<code><p><img alt="" src="/files/users/60/2014-2/filename.jpg" /></p>The files exist on the source hostname, there are {files} and {file_managed} records for them on the D7 site, and the file records exist on the D9 site.
The migration throws tons of errors like this:
[warning] No file found for the relative image URL in tag '<img alt src="/files/users/60/2014-2/filename.jpg">' used in the 'upgrade_d7_node_complete_blog' migration's source row with source ID array() while processing the destination property 'value'.
Work out the cause of the problem.
Needs review
1.0
Code
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
Improved log message if the file wasn't found.
I created a MR from the changes with slightly improved messages to help inform the site builder on a possible solution.
Note to self: when this happens the best option is to manually create {file_managed} records for the files identified and re-run the migration.