Sales by date report warning error

On running Sales By Date report warnings are displayed, but report is produced.
Warning: Invalid argument supplied for foreach() in /home/exmoorfl/public_html/site/wp-content/plugins/jigoshop/admin/reports/admin-report.class.php on line 412

Note – there are no discounts, nor coupons on this system. My work round is to cast to (array) on line 412.

### WordPress Environment ###

Home URL: https://exmoorflag.co.uk
Site URL: https://exmoorflag.co.uk/site
Jigoshop Version: 1.17.7
Jigoshop Database Version: 1503180
Log Directory Writable: ? To allow logging
make /home/exmoorfl/public_html/site/wp-content/uploads/jigoshop-logs/ writable or define a custom JIGOSHOP_LOG_DIR.

WP Version: 4.2.4
WP Multisite: –
WP Memory Limit: 96 MB
WP Debug Mode: –
Language: en_US

### Server Environment ###

Server Info: Apache
PHP Version: 5.3.28
PHP Post Max Size: 8 MB
PHP Time Limit: 30
PHP Max Input Vars: 1000
SUHOSIN Installed:
MySQL Version: 5.5.42
eAccelerator: ?
APC: ?
OpCache: ?
Short Open Tag:
Allow URL fopen: –
Session:
Cookie Path: /
Save Path: /tmp
Use Cookies:
Use Only Cookies:
Max Upload Size: 8 MB
Default Timezone is UTC:
fsockopen/cURL:
SoapClient:
Remote Post:
Remote Get:

### Server Locale ###

decimal_point: .
thousands_sep: N/A
mon_decimal_point: N/A
mon_thousands_sep: N/A

### Active Plugins (16) ###

Contact Form 7: by Takayuki Miyoshi – 4.2.2
WP Cookie Banner: by Creare – 0.1
Easy Timer: by Kleor – 3.6.6
Google Analytics by Yoast: by Team Yoast – 5.4.4
Groups: by itthinx – 1.7.1
Jigoshop Easy Print Button: by Isaac Oyelowo – 1.0
Jigoshop: by Jigoshop Limited – 1.17.7
MailChimp for WordPress Lite: by ibericode – 2.3.7
NextGEN Gallery by Photocrati: by Photocrati Media – 2.1.2
PHP Code Widget: by Otto – 2.3
Sexy Login: by OptimalDevs – 2.5
Simple Social Buttons: by Pawe? Rabinek – 1.7.8
NextScripts: Social Networks Auto-Poster: by Next Scripts – 3.4.21
Yoast SEO: by Team Yoast – 2.3.2
WP Admin No Show: by Doug Sparling – 1.6.0
WP-Polls: by Lester ‘GaMerZ’ Chan – 2.69

### Settings ###

Taxes Enabled: –
Shipping Enabled:
Force SSL: –
Currency: GBP (￡)
Currency Position: left
Thousand Separator: ,
Decimal Separator: .
Number of Decimals: 2

### Jigoshop Pages ###

Shop Base: #549 – /shop/
Cart: #550 – /cart/
Checkout: #556 – /checkout/
Pay: #557 – /checkout/pay/
Thanks: #558 – /checkout/thanks/
My Account: #552 – /my-account/
Edit Address: #553 – /my-account/edit-address/
View Order: #555 – /my-account/view-order/
Change Password: #554 – /my-account/change-password/
Track Order: #551 – /order-tracking/
Terms: #20 – /terms-and-conditions/

### Taxonomies ###

Product Types: configurable (configurable)
downloadable (downloadable)
external (external)
grouped (grouped)
simple (simple)
virtual (virtual)

### Theme ###

Name: ExmoorFlagProject_104a
Version: 1.04a
Author URL: https://magnetwebdesign.co.uk
Child Theme: ? – If you’re modifying Jigoshop or a parent theme you didn’t build personally we recommend using a child theme. See: How to create a child theme
Jigoshop Support: Not Declared

### Templates ###

Overrides: ExmoorFlagProject_104a/index.php

https://www.ads-software.com/plugins/jigoshop/