No Records returned by datasource

[theywill]

MySQL 5.7.41
Magento 2.4
PHP 7.1

I took over a project that used Magmi to import data via the command line.

php $MAGMIFILE -mode=create -CSV:filename="${f}"

I've confirmed that the filename (${f}) provides the full path to the CSV.

/home/[domain]/public_html/[path]/import.csv

When Magmi runs, it doesn't import the data.
startup:Found 0 records, took 1.9073486328125E-5 sec
warning:No Records returned by datasource
end:Import Ended

I added some more logging to see where the problem might be.

1. The parameters are received by Magmi - $params in magmi_productimportengine.php. Imploding $params provides the full path to the file, mode is create.

2. In the same file, $this->getDataSource() appears to be empty. In function lookup() $this->datasource fails the is_object test.

3. Within getPluginInstance($family, $order = -1)...
   if ($order < 0) {
   $order += count($this->_activeplugins[$family]);
   }
   The result is $order = -1. So there are no active plugins? Could that be the issue?

For testing purposes, I've chmoded everything 777. File permissions shouldn't be an issue.

Any ideas for me? Thanks in advance.

[theywill]

As an additional note: I've tried using a profile and not using a profile. No difference.

[theywill]

I found a stackenchange post that suggested using the prior version - 0.7.23. I installed that, copied over my config files, and it ran immediately. That appears to be the fix.