Internal server error

When I go to make a subscription purchase I get a Internal server error.
Any help would be most appreciated.

Here is the log:

### WordPress Environment ###

Home URL: https://411inthe843.com
Site URL: https://411inthe843.com
WC Version: 3.4.3
Log Directory Writable: ?
WP Version: 4.9.6
WP Multisite: –
WP Memory Limit: 512 MB
WP Debug Mode: –
WP Cron: ?
Language: en_US
External object cache: –

### Server Environment ###

Server Info: Apache
PHP Version: 7.1.4 - We recommend using PHP version 7.2 or above for greater performance and security. How to update your PHP version
PHP Post Max Size: 256 MB
PHP Time Limit: 30
PHP Max Input Vars: 1000
cURL Version: 7.19.7
NSS/3.27.1

SUHOSIN Installed: –
MySQL Version: ? 5.5.51-38.2 - We recommend a minimum MySQL version of 5.6. See: WordPress requirements
Max Upload Size: 256 MB
Default Timezone is UTC: ?
fsockopen/cURL: ?
SoapClient: ?
DOMDocument: ?
GZip: ?
Multibyte String: ?
Remote Post: ?
Remote Get: ?

### Database ###

WC Database Version: 3.4.3
WC Database Prefix: wp_
Total Database Size: 5.46MB
Database Data Size: 4.73MB
Database Index Size: 0.73MB
wp_woocommerce_sessions: Data: 0.01MB + Index: 0.00MB
wp_woocommerce_api_keys: Data: 0.00MB + Index: 0.00MB
wp_woocommerce_attribute_taxonomies: Data: 0.00MB + Index: 0.00MB
wp_woocommerce_downloadable_product_permissions: Data: 0.00MB + Index: 0.00MB
wp_woocommerce_order_items: Data: 0.00MB + Index: 0.00MB
wp_woocommerce_order_itemmeta: Data: 0.02MB + Index: 0.01MB
wp_woocommerce_tax_rates: Data: 0.00MB + Index: 0.00MB
wp_woocommerce_tax_rate_locations: Data: 0.00MB + Index: 0.00MB
wp_woocommerce_shipping_zones: Data: 0.00MB + Index: 0.00MB
wp_woocommerce_shipping_zone_locations: Data: 0.00MB + Index: 0.00MB
wp_woocommerce_shipping_zone_methods: Data: 0.00MB + Index: 0.00MB
wp_woocommerce_payment_tokens: Data: 0.00MB + Index: 0.00MB
wp_woocommerce_payment_tokenmeta: Data: 0.00MB + Index: 0.00MB
wp_woocommerce_log: Data: 0.00MB + Index: 0.00MB
wp_commentmeta: Data: 0.03MB + Index: 0.02MB
wp_comments: Data: 0.01MB + Index: 0.01MB
wp_datalist: Data: 0.00MB + Index: 0.00MB
wp_duplicator_packages: Data: 0.00MB + Index: 0.00MB
wp_ewwwio_images: Data: 0.27MB + Index: 0.17MB
wp_gglcptch_whitelist: Data: 0.02MB + Index: 0.02MB
wp_links: Data: 0.00MB + Index: 0.00MB
wp_options: Data: 2.89MB + Index: 0.12MB
wp_places_locator: Data: 0.00MB + Index: 0.00MB
wp_postmeta: Data: 0.51MB + Index: 0.19MB
wp_posts: Data: 0.72MB + Index: 0.07MB
wp_revslider_css: Data: 0.09MB + Index: 0.00MB
wp_revslider_layer_animations: Data: 0.00MB + Index: 0.00MB
wp_revslider_navigations: Data: 0.00MB + Index: 0.00MB
wp_revslider_sliders: Data: 0.03MB + Index: 0.00MB
wp_revslider_slides: Data: 0.04MB + Index: 0.00MB
wp_revslider_static_slides: Data: 0.00MB + Index: 0.00MB
wp_rg_form: Data: 0.00MB + Index: 0.00MB
wp_rg_form_meta: Data: 0.01MB + Index: 0.00MB
wp_rg_form_view: Data: 0.01MB + Index: 0.01MB
wp_rg_incomplete_submissions: Data: 0.00MB + Index: 0.00MB
wp_rg_lead: Data: 0.00MB + Index: 0.00MB
wp_rg_lead_detail: Data: 0.00MB + Index: 0.00MB
wp_rg_lead_detail_long: Data: 0.00MB + Index: 0.00MB
wp_rg_lead_meta: Data: 0.00MB + Index: 0.00MB
wp_rg_lead_notes: Data: 0.00MB + Index: 0.00MB
wp_termmeta: Data: 0.00MB + Index: 0.01MB
wp_terms: Data: 0.01MB + Index: 0.02MB
wp_term_relationships: Data: 0.01MB + Index: 0.02MB
wp_term_taxonomy: Data: 0.01MB + Index: 0.01MB
wp_usermeta: Data: 0.01MB + Index: 0.02MB
wp_users: Data: 0.00MB + Index: 0.01MB
wp_wc_download_log: Data: 0.00MB + Index: 0.00MB
wp_wc_webhooks: Data: 0.00MB + Index: 0.00MB
wp_wfBadLeechers: Data: 0.00MB + Index: 0.00MB
wp_wfBlockedCommentLog: Data: 0.00MB + Index: 0.00MB
wp_wfBlockedIPLog: Data: 0.00MB + Index: 0.00MB
wp_wfBlocks7: Data: 0.00MB + Index: 0.00MB
wp_wfConfig: Data: 0.02MB + Index: 0.01MB
wp_wfCrawlers: Data: 0.00MB + Index: 0.00MB
wp_wfFileChanges: Data: 0.00MB + Index: 0.00MB
wp_wfFileMods: Data: 0.00MB + Index: 0.00MB
wp_wfHits: Data: 0.01MB + Index: 0.00MB
wp_wfHoover: Data: 0.00MB + Index: 0.00MB
wp_wfIssues: Data: 0.00MB + Index: 0.01MB
wp_wfKnownFileList: Data: 0.00MB + Index: 0.00MB
wp_wfLeechers: Data: 0.00MB + Index: 0.00MB
wp_wfLiveTrafficHuman: Data: 0.00MB + Index: 0.00MB
wp_wfLocs: Data: 0.00MB + Index: 0.00MB
wp_wfLogins: Data: 0.00MB + Index: 0.00MB
wp_wfNotifications: Data: 0.00MB + Index: 0.00MB
wp_wfPendingIssues: Data: 0.00MB + Index: 0.00MB
wp_wfReverseCache: Data: 0.00MB + Index: 0.00MB
wp_wfScanners: Data: 0.00MB + Index: 0.00MB
wp_wfSNIPCache: Data: 0.00MB + Index: 0.00MB
wp_wfStatus: Data: 0.00MB + Index: 0.00MB
wp_wfVulnScanners: Data: 0.00MB + Index: 0.00MB
wp_wsluserscontacts: Data: 0.00MB + Index: 0.00MB
wp_wslusersprofiles: Data: 0.00MB + Index: 0.00MB
wp_yith_ywsbs_activities_log: Data: 0.00MB + Index: 0.00MB

### Post Type Counts ###

amn_mi-lite: 2
amn_wpforms-lite: 2
apus_brand: 4
apus_footer: 1
apus_megamenu: 1
attachment: 195
custom_css: 1
customize_changeset: 1
job_listing: 8
mc4wp-form: 2
nav_menu_item: 51
page: 18
popup: 1
popup_theme: 6
post: 3
product: 6
revision: 217
scheduled-action: 1
shop_coupon: 1
shop_order: 19
shop_order_refund: 1
vc_settings_preset: 2
wpforms: 1

### Security ###

Secure connection (HTTPS): ?
Hide errors from visitors: ?

### Active Plugins (23) ###

Gravity Forms: by rocketgenius – 2.2.5
AceIDE: by AceIDE – 2.6.1
All In One SEO Pack: by Michael Torbert – 2.6.1
Apus Framework: by Team ApusTheme – 1.0
Apus Prolist: by ApusTheme – 1.0.0
Bulk Term Generator: by Nate Allen – 1.3.0
Child Theme Configurator: by Lilaea Media – 2.3.0.4
CMB2: by CMB2 team – 2.4.2
Coming Soon Page & Maintenance Mode by SeedProd: by SeedProd – 5.0.20
Duplicator: by Snap Creek – 1.2.40
EWWW Image Optimizer: by Shane Bishop – 4.2.2
Google Analytics for WordPress by MonsterInsights: by MonsterInsights – 7.0.8
Google Captcha (reCAPTCHA) by BestWebSoft: by BestWebSoft – 1.36
WPBakery Page Builder: by Michael M - WPBakery.com – 5.4.5
Popup Maker: by WP Popup Maker – 1.7.29
Slider Revolution: by ThemePunch – 5.4.6.3
SVG Support: by Benbodhi – 2.3.15
WooCommerce Quantity Increment: by Automattic
WooThemes – 1.1.0 – Not tested with the active version of WooCommerce

WooCommerce Square: by WooCommerce – 1.0.31
WooCommerce: by Automattic – 3.4.3
Wordfence Security: by Wordfence – 7.1.7
WP Job Manager: by Automattic – 1.31.0
YITH WooCommerce Subscription: by YITHEMES – 1.2.2

### Settings ###

API Enabled: ?
Force SSL: ?
Currency: USD ($)
Currency Position: left
Thousand Separator: ,
Decimal Separator: .
Number of Decimals: 0
Taxonomies: Product Types: external (external)
grouped (grouped)
simple (simple)
subscription (subscription)
variable (variable)
variable subscription (variable-subscription)

Taxonomies: Product Visibility: exclude-from-catalog (exclude-from-catalog)
exclude-from-search (exclude-from-search)
featured (featured)
outofstock (outofstock)
rated-1 (rated-1)
rated-2 (rated-2)
rated-3 (rated-3)
rated-4 (rated-4)
rated-5 (rated-5)

### WC Pages ###

Shop base: ? Page visibility should be public
Cart: #8 - /cart/
Checkout: #9 - /checkout/
My account: ? Page does not contain the shortcode.
Terms and conditions: ? Page not set

### Theme ###

Name: Prolist Child
Version: 1.0.0.1511286897
Author URL: https://bongopress.com/
Child Theme: ?
Parent Theme Name: Prolist
Parent Theme Version: 1.0.0
Parent Theme Author URL: https://prolists.com/
WooCommerce Support: ?

### Templates ###

Archive Template: Your theme has a woocommerce.php file
you will not be able to override the woocommerce/archive-product.php custom template since woocommerce.php has priority over archive-product.php. This is intended to prevent display issues.

Overrides: prolist-child/woocommerce/archive-product.php
prolist-child/woocommerce/auth/footer.php
prolist-child/woocommerce/auth/form-grant-access.php
prolist-child/woocommerce/auth/form-login.php
prolist-child/woocommerce/auth/header.php
prolist-child/woocommerce/cart/cart-empty.php
prolist-child/woocommerce/cart/cart-item-data.php
prolist-child/woocommerce/cart/cart-shipping.php
prolist-child/woocommerce/cart/cart-totals.php
prolist-child/woocommerce/cart/cart.php
prolist-child/woocommerce/cart/cross-sells.php
prolist-child/woocommerce/cart/mini-cart.php
prolist-child/woocommerce/cart/proceed-to-checkout-button.php
prolist-child/woocommerce/cart/shipping-calculator.php
prolist-child/woocommerce/checkout/cart-errors.php
prolist-child/woocommerce/checkout/form-billing.php
prolist-child/woocommerce/checkout/form-checkout.php
prolist-child/woocommerce/checkout/form-coupon.php
prolist-child/woocommerce/checkout/form-login.php
prolist-child/woocommerce/checkout/form-pay.php
prolist-child/woocommerce/checkout/form-shipping.php
prolist-child/woocommerce/checkout/order-receipt.php
prolist-child/woocommerce/checkout/payment-method.php
prolist-child/woocommerce/checkout/payment.php
prolist-child/woocommerce/checkout/review-order.php
prolist-child/woocommerce/checkout/terms.php
prolist-child/woocommerce/checkout/thankyou.php
prolist-child/woocommerce/content-product.php
prolist-child/woocommerce/content-product_cat.php
prolist-child/woocommerce/content-single-product.php
prolist-child/woocommerce/content-widget-product.php
prolist-child/woocommerce/content-widget-reviews.php
prolist-child/woocommerce/emails/admin-cancelled-order.php
prolist-child/woocommerce/emails/admin-failed-order.php
prolist-child/woocommerce/emails/admin-new-order.php
prolist-child/woocommerce/emails/customer-completed-order.php
prolist-child/woocommerce/emails/customer-invoice.php
prolist-child/woocommerce/emails/customer-new-account.php
prolist-child/woocommerce/emails/customer-note.php
prolist-child/woocommerce/emails/customer-on-hold-order.php
prolist-child/woocommerce/emails/customer-processing-order.php
prolist-child/woocommerce/emails/customer-refunded-order.php
prolist-child/woocommerce/emails/customer-reset-password.php
prolist-child/woocommerce/emails/email-addresses.php
prolist-child/woocommerce/emails/email-customer-details.php
prolist-child/woocommerce/emails/email-downloads.php
prolist-child/woocommerce/emails/email-footer.php
prolist-child/woocommerce/emails/email-header.php
prolist-child/woocommerce/emails/email-order-details.php
prolist-child/woocommerce/emails/email-order-items.php
prolist-child/woocommerce/emails/email-styles.php
prolist-child/woocommerce/emails/plain/admin-cancelled-order.php
prolist-child/woocommerce/emails/plain/admin-failed-order.php
prolist-child/woocommerce/emails/plain/admin-new-order.php
prolist-child/woocommerce/emails/plain/customer-completed-order.php
prolist-child/woocommerce/emails/plain/customer-invoice.php
prolist-child/woocommerce/emails/plain/customer-new-account.php
prolist-child/woocommerce/emails/plain/customer-note.php
prolist-child/woocommerce/emails/plain/customer-on-hold-order.php
prolist-child/woocommerce/emails/plain/customer-processing-order.php
prolist-child/woocommerce/emails/plain/customer-refunded-order.php
prolist-child/woocommerce/emails/plain/customer-reset-password.php
prolist-child/woocommerce/emails/plain/email-addresses.php
prolist-child/woocommerce/emails/plain/email-customer-details.php
prolist-child/woocommerce/emails/plain/email-downloads.php
prolist-child/woocommerce/emails/plain/email-order-details.php
prolist-child/woocommerce/emails/plain/email-order-items.php
prolist-child/woocommerce/global/breadcrumb.php
prolist-child/woocommerce/global/form-login.php
prolist-child/woocommerce/global/quantity-input.php
prolist-child/woocommerce/global/sidebar.php
prolist-child/woocommerce/global/wrapper-end.php
prolist-child/woocommerce/global/wrapper-start.php
prolist-child/woocommerce/loop/add-to-cart.php
prolist-child/woocommerce/loop/loop-end.php
prolist-child/woocommerce/loop/loop-start.php
prolist-child/woocommerce/loop/no-products-found.php
prolist-child/woocommerce/loop/orderby.php
prolist-child/woocommerce/loop/pagination.php
prolist-child/woocommerce/loop/price.php
prolist-child/woocommerce/loop/rating.php
prolist-child/woocommerce/loop/result-count.php
prolist-child/woocommerce/loop/sale-flash.php
prolist-child/woocommerce/myaccount/dashboard.php
prolist-child/woocommerce/myaccount/downloads.php
prolist-child/woocommerce/myaccount/form-add-payment-method.php
prolist-child/woocommerce/myaccount/form-edit-account.php
prolist-child/woocommerce/myaccount/form-edit-address.php
prolist-child/woocommerce/myaccount/form-login.php
prolist-child/woocommerce/myaccount/form-lost-password.php
prolist-child/woocommerce/myaccount/form-reset-password.php
prolist-child/woocommerce/myaccount/lost-password-confirmation.php
prolist-child/woocommerce/myaccount/my-account.php
prolist-child/woocommerce/myaccount/my-address.php
prolist-child/woocommerce/myaccount/my-downloads.php
prolist-child/woocommerce/myaccount/my-orders.php
prolist-child/woocommerce/myaccount/navigation.php
prolist-child/woocommerce/myaccount/orders.php
prolist-child/woocommerce/myaccount/payment-methods.php
prolist-child/woocommerce/myaccount/view-order.php
prolist-child/woocommerce/notices/error.php
prolist-child/woocommerce/notices/notice.php
prolist-child/woocommerce/notices/success.php
prolist-child/woocommerce/order/form-tracking.php
prolist-child/woocommerce/order/order-again.php
prolist-child/woocommerce/order/order-details-customer.php
prolist-child/woocommerce/order/order-details-item.php
prolist-child/woocommerce/order/order-details.php
prolist-child/woocommerce/order/order-downloads.php
prolist-child/woocommerce/order/tracking.php
prolist-child/woocommerce/product-searchform.php
prolist-child/woocommerce/single-product/add-to-cart/external.php
prolist-child/woocommerce/single-product/add-to-cart/grouped.php
prolist-child/woocommerce/single-product/add-to-cart/simple.php
prolist-child/woocommerce/single-product/add-to-cart/variable.php
prolist-child/woocommerce/single-product/add-to-cart/variation-add-to-cart-button.php
prolist-child/woocommerce/single-product/add-to-cart/variation.php
prolist-child/woocommerce/single-product/meta.php
prolist-child/woocommerce/single-product/photoswipe.php
prolist-child/woocommerce/single-product/price.php
prolist-child/woocommerce/single-product/product-attributes.php
prolist-child/woocommerce/single-product/product-image.php
prolist-child/woocommerce/single-product/product-thumbnails.php
prolist-child/woocommerce/single-product/rating.php
prolist-child/woocommerce/single-product/related.php
prolist-child/woocommerce/single-product/review-meta.php
prolist-child/woocommerce/single-product/review-rating.php
prolist-child/woocommerce/single-product/review.php
prolist-child/woocommerce/single-product/sale-flash.php
prolist-child/woocommerce/single-product/share.php
prolist-child/woocommerce/single-product/short-description.php
prolist-child/woocommerce/single-product/stock.php
prolist-child/woocommerce/single-product/tabs/additional-information.php
prolist-child/woocommerce/single-product/tabs/description.php
prolist-child/woocommerce/single-product/tabs/tabs.php
prolist-child/woocommerce/single-product/title.php
prolist-child/woocommerce/single-product/up-sells.php
prolist-child/woocommerce/single-product-reviews.php
prolist-child/woocommerce/single-product.php
prolist-child/woocommerce/taxonomy-product_cat.php
prolist-child/woocommerce/taxonomy-product_tag.php

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