count()

I have the error on my website “Warning: count(): Parameter must be an array or an object that implements Countable in /home/sainformaticacom/public_html/wp-includes/post-template.php on line 284”.

Service Information:

### WordPress Environment ###

Home URL: https://sainformatica.com.es
Site URL: https://sainformatica.com.es
WP Version: 4.9.6
WP Multisite: –
WP Memory Limit: 256 MB
FS Accessible: ?
WP Debug Mode: ?
Language: es_ES

### Server Environment ###

Server Info: LiteSpeed
PHP Version: 7.2.5
PHP Post Max Size: 128 MB
PHP Time Limit: 120
PHP Max Input Vars: 3000
SUHOSIN Installed: –
ZipArchive: ?
MySQL Version: 10.1.33
Max Upload Size: 128 MB
GD Library: bundled (2.1.0 compatible)
cURL: 7.54.0

### The7 Information ###

Current Version: 6.5.1.1
Installation Path: /home/sainformaticacom/public_html/wp-content/themes/dt-the7
The7 Server Available: ?

### Active Plugins (20) ###

Shield Security: by One Dollar Plugin – 6.7.2
The7 Ultimate Addons for WPBakery Page Builder: by Brainstorm Force – 3.16.23
Advanced Database Cleaner: by Younes JFR. – 2.0.0
AntiVirus: by pluginkollektiv – 1.3.9
iThemes Security: by iThemes – 7.0.1
The7 Elementos: by Dream-Theme – 1.8.0.1
Duplicate Post: by Enrico Battocchi – 3.2.2
Envato Market: by Envato – 2.0.0
Exploit Scanner: by Automattic – 1.5.2
The7 Go Pricing – WordPress Responsive Pricing Tables: by Granth – 3.3.9
Yet Skin – Add-on for Go Pricing: by Granth – 1.2.0
Jetpack by WordPress.com: by Automattic – 6.1.1
The7 WPBakery Page Builder: by Michael M – WPBakery.com – 5.4.7
Maintenance: by fruitfulcode – 3.6.1
Really Simple SSL pro: by Rogier Lankhorst – 2.0.15
Really Simple SSL: by Rogier Lankhorst – 3.0
The7 Slider Revolution: by ThemePunch – 5.4.7.4
Smart Cleanup Tools: by Milan Petrovic – 4.6
Wordfence Security: by Wordfence – 7.1.6
Importador de WordPress: by wordpresspuntoorg – 0.6.4

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