Warning: Missing argument

@justyce.

Thanks for reporting the issue. can you please get us the system log. from our plugin under tools / system menu ?

i found this:

### Begin WooCommerce Quick Donation Status ###

— WordPress Environment

Home URL: https://vwonline.lumwall.com/donate
Site URL: https://vwonline.lumwall.com
WP Version: 4.4
WP_DEBUG: Disabled
WP Language: en_US
Multisite: No
WP Memory Limit: 40MB
WP Memory Limit Status: Not OK – Recommended Memory Limit is 64MB
WP Table Prefix: AlYGWKvw
WP Table Prefix Length: 8
WP Table Prefix Status: Acceptable
WP Timezone: , GMT: 0
WP Remote Post: wp_remote_post() works
Permalink Structure: /%postname%
Registered Post Stati: publish, future, draft, pending, private, trash, auto-draft, inherit, donation-completed, donation-on-hold, donation-refunded, wc-pending, wc-processing, wc-on-hold, wc-completed, wc-cancelled, wc-refunded, wc-failed
Show On Front: page
Page On Front: Page For Posts:
## Theme Information ##

Theme Name: MaxStore
Theme Version: 1.0.2
Theme Author: Themes4WP
Theme Author URI: https://themes4wp.com
Is Child Theme: No

## Plugins Information ##

— Must-Use Plugins

: {V : || A : }

— WordPress Active Plugins

1&1 WP Wizard : {V : 2.0.1 || A : 1&1 } https://www.1and1.com
CMB2 : {V : 2.1.2 || A : WebDevStudios } https://github.com/WebDevStudios/CMB2
Facebook Tab Manager : {V : 3.4.1 || A : David F. Carr } https://facebooktabmanager.com
PrayBox : {V : 1.4 || A : Bryan Haddock } https://www.praybox.com/
Voguepay WooCommerce Payment Gateway : {V : 3.2.1 || A : Tunbosun Ayinla } https://bosun.me/voguepay-woocommerce-payment-gateway
WooCommerce : {V : 2.4.12 || A : WooThemes } https://www.woothemes.com/woocommerce/
Woocommerce Multi Currency Store : {V : 1.2.3 || A : Code Ninjas } https://codeninjas.co/plugins/woocommerce-multi-currency-store
WooCommerce Quick Donation : {V : 1.3.8 BETA || A : Varun Sridharan } https://www.ads-software.com/plugins/woocommerce-quick-donation/
WooCommerce shop to Facebook : {V : 2.4 || A : StoreYa } https://www.storeya.com/
Woo Display Additional Currency : {V : 1.0 || A : Brijesh Mishra }
WPBook : {V : 2.7.2 || A : John Eckman } https://wpbook.net/
YITH Donations for WooCommerce : {V : 1.0.5 || A : YIThemes } https://yithemes.com/themes/plugins/yith-woocommerce-donations/

— WordPress Inactive Plugins

Akismet : {V : 3.1.5 || A : Automattic } https://akismet.com/

## Server Environment ##

Server Info: Apache
Host: DBH: db606816146.db.1and1.com, SRV: vwonline.lumwall.com
Default Timezone: UTC
MySQL Version: 5.5.46-0+deb7u1-log

— PHP Configuration

PHP Version: 5.5.30
PHP Post Max Size: 52428800
PHP Time Limit: 30
PHP Max Input Vars: 1000
PHP Safe Mode: No
PHP Memory Limit: 256M
PHP Upload Max Size: 41943040
PHP Upload Max Filesize: 41943040
PHP Arg Separator: &
PHP Allow URL File Open: Yes

— PHP Extentions

DISPLAY ERRORS: On (1)
FSOCKOPEN: Your server supports fsockopen.
cURL: Your server supports cURL.
SOAP Client: Your server has the SOAP Client enabled.
SUHOSIN: Your server does not have SUHOSIN installed.

— Session Configuration

Session: Enabled
Session Name: PHPSESSID
Cookie Path: /
Save Path:
Use Cookies: On
Use Only Cookies: On

— Client Details:

Platform: Windows
Browser Name: Firefox
Browser Version: 41.0
User Agent String: Mozilla/5.0 (Windows NT 6.1; WOW
64; rv:41.0) Gecko/20100101 Fire
fox/41.0

Client IP Address: 197.211.53.6

## WC Qucik Donation Settings Information ##

Simple Donation Product Exist : 1

— general Settings
wc_qd_redirect_user : checkout
wc_qd_already_exist_redirect_user : cart
wc_qd_payment_gateway : [“tbz_voguepay_gateway”]

— message Settings
wc_qd_empty_donation_msg_1 : null
wc_qd_donation_with_other_products : Unable To Process Donation. Kindly Complete The Exist Order
wc_qd_empty_donation_msg : Please Enter A Donation Amount
wc_qd_donation_already_exist : Donation Already Exist In Cart. Kindly Complete The Existing
wc_qd_invalid_donation_msg : Invalid Donation Amount Entered [{donation_amount}]
wc_qd_min_rda_msg : Please Enter Minimum of {min_amount}.
wc_qd_max_rda_msg : Please Enter Maximum of {max_amount}.

— shortcode Settings
wc_qd_default_render_type : select
wc_qd_shortcode_show_errors : true
wc_qd_pre_selected_project : null
wc_qd_pre_defined_amount : null

## Template Override Information

### End WooCommerce Quick Donation Status ###

i found this
### Begin WooCommerce Quick Donation Status ###

— WordPress Environment

Home URL: https://vwonline.lumwall.com/donate
Site URL: https://vwonline.lumwall.com
WP Version: 4.4
WP_DEBUG: Disabled
WP Language: en_US
Multisite: No
WP Memory Limit: 40MB
WP Memory Limit Status: Not OK – Recommended Memory Limit is 64MB
WP Table Prefix: AlYGWKvw
WP Table Prefix Length: 8
WP Table Prefix Status: Acceptable
WP Timezone: , GMT: 0
WP Remote Post: wp_remote_post() works
Permalink Structure: /%postname%
Registered Post Stati: publish, future, draft, pending, private, trash, auto-draft, inherit, donation-completed, donation-on-hold, donation-refunded, wc-pending, wc-processing, wc-on-hold, wc-completed, wc-cancelled, wc-refunded, wc-failed
Show On Front: page
Page On Front: Page For Posts:
## Theme Information ##

Theme Name: MaxStore
Theme Version: 1.0.2
Theme Author: Themes4WP
Theme Author URI: https://themes4wp.com
Is Child Theme: No

## Plugins Information ##

— Must-Use Plugins

: {V : || A : }

— WordPress Active Plugins

1&1 WP Wizard : {V : 2.0.1 || A : 1&1 } https://www.1and1.com
CMB2 : {V : 2.1.2 || A : WebDevStudios } https://github.com/WebDevStudios/CMB2
Facebook Tab Manager : {V : 3.4.1 || A : David F. Carr } https://facebooktabmanager.com
PrayBox : {V : 1.4 || A : Bryan Haddock } https://www.praybox.com/
Voguepay WooCommerce Payment Gateway : {V : 3.2.1 || A : Tunbosun Ayinla } https://bosun.me/voguepay-woocommerce-payment-gateway
WooCommerce : {V : 2.4.12 || A : WooThemes } https://www.woothemes.com/woocommerce/
Woocommerce Multi Currency Store : {V : 1.2.3 || A : Code Ninjas } https://codeninjas.co/plugins/woocommerce-multi-currency-store
WooCommerce Quick Donation : {V : 1.3.8 BETA || A : Varun Sridharan } https://www.ads-software.com/plugins/woocommerce-quick-donation/
WooCommerce shop to Facebook : {V : 2.4 || A : StoreYa } https://www.storeya.com/
Woo Display Additional Currency : {V : 1.0 || A : Brijesh Mishra }
WPBook : {V : 2.7.2 || A : John Eckman } https://wpbook.net/
YITH Donations for WooCommerce : {V : 1.0.5 || A : YIThemes } https://yithemes.com/themes/plugins/yith-woocommerce-donations/

— WordPress Inactive Plugins

Akismet : {V : 3.1.5 || A : Automattic } https://akismet.com/

## Server Environment ##

Server Info: Apache
Host: DBH: db606816146.db.1and1.com, SRV: vwonline.lumwall.com
Default Timezone: UTC
MySQL Version: 5.5.46-0+deb7u1-log

— PHP Configuration

PHP Version: 5.5.30
PHP Post Max Size: 52428800
PHP Time Limit: 30
PHP Max Input Vars: 1000
PHP Safe Mode: No
PHP Memory Limit: 256M
PHP Upload Max Size: 41943040
PHP Upload Max Filesize: 41943040
PHP Arg Separator: &
PHP Allow URL File Open: Yes

— PHP Extentions

DISPLAY ERRORS: On (1)
FSOCKOPEN: Your server supports fsockopen.
cURL: Your server supports cURL.
SOAP Client: Your server has the SOAP Client enabled.
SUHOSIN: Your server does not have SUHOSIN installed.

— Session Configuration

Session: Enabled
Session Name: PHPSESSID
Cookie Path: /
Save Path:
Use Cookies: On
Use Only Cookies: On

— Client Details:

Platform: Windows
Browser Name: Firefox
Browser Version: 41.0
User Agent String: Mozilla/5.0 (Windows NT 6.1; WOW
64; rv:41.0) Gecko/20100101 Fire
fox/41.0

Client IP Address: 197.211.53.6

## WC Qucik Donation Settings Information ##

Simple Donation Product Exist : 1

— general Settings
wc_qd_redirect_user : checkout
wc_qd_already_exist_redirect_user : cart
wc_qd_payment_gateway : [“tbz_voguepay_gateway”]

— message Settings
wc_qd_empty_donation_msg_1 : null
wc_qd_donation_with_other_products : Unable To Process Donation. Kindly Complete The Exist Order
wc_qd_empty_donation_msg : Please Enter A Donation Amount
wc_qd_donation_already_exist : Donation Already Exist In Cart. Kindly Complete The Existing
wc_qd_invalid_donation_msg : Invalid Donation Amount Entered [{donation_amount}]
wc_qd_min_rda_msg : Please Enter Minimum of {min_amount}.
wc_qd_max_rda_msg : Please Enter Maximum of {max_amount}.

— shortcode Settings
wc_qd_default_render_type : select
wc_qd_shortcode_show_errors : true
wc_qd_pre_selected_project : null
wc_qd_pre_defined_amount : null
## Template Override Information
### End WooCommerce Quick Donation Status ###

@justyce

thanks for your reply. ??

right now i am little busy with other works.. i will sure check and solve it in just 3 -4 days max..

and sorry for the delayed response

Was there a solution to this problem yet? I am having the same error on my site with this plugin also.