You nailed it!
I did as requested and the forms are now showing up and that error is gone:
For what it's worth, as I still have debug on, I'm getting some warnings which may or may not create a problem. Upon loading a form, I get this one:
<b>Warning: botBreezingForms_replacer(): Argument #1 ($matches) must be passed by reference, value given in /home/customer/www/rescueparrots.org/public_html/stage/plugins/content/breezingforms/breezingforms.php on line 124</b>
When I press "submit" on that same form, I get the following:
<b>
Warning: botBreezingForms_replacer(): Argument #1 ($matches) must be passed by reference, value given in /home/customer/www/rescueparrots.org/public_html/stage/plugins/content/breezingforms/breezingforms.php on line 124
Deprecated: Required parameter $currentfont follows optional parameter $isunicode in /home/customer/www/rescueparrots.org/public_html/stage/administrator/components/com_breezingforms/libraries/tcpdf/include/tcpdf_fonts.php on line 1892
Deprecated: Required parameter $currentfont follows optional parameter $setbom in /home/customer/www/rescueparrots.org/public_html/stage/administrator/components/com_breezingforms/libraries/tcpdf/include/tcpdf_fonts.php on line 1930
Deprecated: Required parameter $currentfont follows optional parameter $str in /home/customer/www/rescueparrots.org/public_html/stage/administrator/components/com_breezingforms/libraries/tcpdf/include/tcpdf_fonts.php on line 1967
Deprecated: Required parameter $k follows optional parameter $points in /home/customer/www/rescueparrots.org/public_html/stage/administrator/components/com_breezingforms/libraries/tcpdf/include/tcpdf_static.php on line 550
Deprecated: Required parameter $tagvspaces follows optional parameter $default_css in /home/customer/www/rescueparrots.org/public_html/stage/administrator/components/com_breezingforms/libraries/tcpdf/include/tcpdf_static.php on line 1759
Warning: fopen(/home/customer/www/rescueparrots.org/public_html/stage/administrator/components/com_breezingforms/packages/stdlib.english.xml/ffexport-pdf-20230126152512-1426651694.pdf): Failed to open stream: No such file or directory in /home/customer/www/rescueparrots.org/public_html/stage/administrator/components/com_breezingforms/libraries/tcpdf/include/tcpdf_static.php on line 2441
TCPDF ERROR: Unable to create output file: /home/customer/www/rescueparrots.org/public_html/stage/administrator/components/com_breezingforms/packages/stdlib.english.xml/ffexport-pdf-20230126152512-1426651694.pdf
</b>
The last error having to do with stdlib.english.xml -- I did follow the instructions to install that package, but I didn't get a warm and fuzzy feeling that it actually did install it. While the package is not sitting there waiting to be installed anymore, I never really got a confirmation that it installed properly when I tried to do it.
For what it's worth, after turning debugging off, I'm still getting the TCPDF Error listed above.