TypeError: count(): Argument #1 ($value) must be of type Countable|array, bool given in count()

Problem/Motivation

There is an issue when trying to run an export of the taxonomy term list. I tried to just do an export of a taxonomy term and received an error page with the attached.

TypeError: count(): Argument #1 ($value) must be of type Countable|array, bool given in count() (line 92 of /var/www/html/web/modules/contrib/term_csv_export_import/src/Controller/ExportController.php)

Steps to reproduce

Using PHP Version 8.0.24
Using Drupal 9.4.8.

1. Install module
2. Setup taxonomy vocabulary with a list of terms in a hierarchy
3. Go into the Configuration -> Term CSV Export/Import -> Term CSV Export -> Attempt to export new term

Proposed resolution

I'll put a quick patch together and attach in a later comment