Notice: wpmu_new_blog is deprecated since version 5.1.0! Use wp_insert_site instead.

[rootl]

Notice: wpmu_new_blog is deprecated since version 5.1.0! Use wp_insert_site instead. in /var/www/html/[ourpressbooksintall]/wp-includes/functions.php on line 4605

When attempting to create a new book, this error message shows when Candela-Citation is active. Error is not generated when this plugin is inactive.

WordPress Configuration

Network URL: http://milnepublishing.geneseo.edu/
Network Type: Subdirectory
Version: 5.1
Language: en_US
WP_ENV: Not set
WP_DEBUG: Enabled
Memory Limit: 64M

Pressbooks Configuration

Version: 5.6.5
Root Theme: Aldine
Root Theme Version: 1.5.0

Pressbooks Dependencies

Epubcheck: Installed
Kindlegen: Installed
xmllint: Installed
PrinceXML: Installed
Saxon-HE: Installed

Must-Use Plugins

Global SMTP: 1.0
hm-autoloader.php: n/a
WP Multisite Allow Hyphens and Underscores Override Admin: 1.0
WP Pressbooks Allow Prince 300dpi Images: n/a

Network Active Plugins

Candela Citation: 0.2.2
Check Email: 0.5.5
Disable Comments: 1.9.0
GitHub Updater: 8.7.0
Hypothesis: 0.5.0
iframe: 4.4
Openstax Import for Pressbooks: 1.3.2
Pressbooks: 5.6.5
Textbooks for Pressbooks: 4.2.3
UpdraftPlus - Backup/Restore: 2.16.6.24
WordPress Mass Email to users: 1.1
WP-Optimize: 2.2.12
WP QuickLaTeX: 3.8.6

Server Configuration

PHP Version: 7.3.1
MySQL Version: 5.6.42
Webserver Info: Apache/2.4.6 () OpenSSL/1.0.2k-fips PHP/7.3.1