Confirmations go to 500 Error

This form was functioning properly until about a month or so. Once the submit button is clicked, the email is sent but none of the confirmation choices work. I get a 500 Error on all of them. I have deactivated all of the plug ins and switched themes will no success. (I have reactivated the ones I use after testing) I need this page to go to the URL https://www.freeportskiboosters.com/membership/membership-payment/

I have Debug set to true with no errors.

### Begin System Info ###

— WPForms Info

Lite: Nov 19, 2019 @ 10:18pm

— Site Info

Site URL: https://www.freeportskiboosters.com
Home URL: https://www.freeportskiboosters.com
Multisite: No

— WordPress Configuration

Version: 5.5.3
Language: en_US
Permalink Structure: /%postname%/
Active Theme: Quna 1.1.1
Show On Front: page
Page On Front: Freeport Ski Boosters (#2)
Page For Posts: Events (#23)
ABSPATH: D:\hshome\mallar\freeportskiboosters.com/
Table Prefix: Length: 3 Status: Acceptable
WP_DEBUG: Enabled
WPFORMS_DEBUG: Not set
Memory Limit: 40M
Registered Post Stati: publish, future, draft, pending, private, trash, auto-draft, inherit, request-pending, request-confirmed, request-failed, request-completed

— WordPress Uploads/Constants

WP_CONTENT_DIR: D:\hshome\mallar\freeportskiboosters.com/wp-content
WP_CONTENT_URL: https://www.freeportskiboosters.com/wp-content
UPLOADS: Not set
wp_uploads_dir() path: D:\hshome\mallar\freeportskiboosters.com/wp-content/uploads/2020/12
wp_uploads_dir() url: https://www.freeportskiboosters.com/wp-content/uploads/2020/12
wp_uploads_dir() basedir: D:\hshome\mallar\freeportskiboosters.com/wp-content/uploads
wp_uploads_dir() baseurl: https://www.freeportskiboosters.com/wp-content/uploads

— WordPress Active Plugins

Atomic Blocks – Gutenberg Blocks Collection: 2.9.0
Classic Editor: 1.6
Code Snippets: 2.14.0
Custom Body Class: 0.7.2
GutenBee: 2.7.0
Quna Design Pack: 1.0
Unique Headers: 1.7.12
WPForms Lite: 1.6.3.1
WP Mail SMTP: 2.5.1

— WordPress Inactive Plugins

Akismet Anti-Spam: 4.1.7
Hello Dolly: 1.7.2
Kirki Customizer Framework: 3.1.5
Ninja Forms: 3.4.32
One Click Demo Import: 2.6.1
Sassy Social Share: 3.3.14

— Webserver Configuration

PHP Version: 7.2.15
MySQL Version: 5.1.73
Webserver Info: Microsoft-IIS/7.5

— PHP Configuration

Memory Limit: 256M
Upload Max Size: 16M
Post Max Size: 20M
Upload Max Filesize: 16M
Time Limit: 60
Max Input Vars: 1000
Display Errors: On (1)

— PHP Extensions

cURL: Supported
fsockopen: Supported
SOAP Client: Not Installed
Suhosin: Not Installed

— Session Configuration

Session: Disabled

### End System Info ###

The page I need help with: [log in to see the link]