Undefined index: pluginver

Plugin Version: 1.1.1
WP Version: 4.2.1
PHP Version: 5.4.28
Boostrap framework, but mostly just the grid enabled.
Theme: custom
Plugins: I still get the error when all plugins are disabled. All plugins are up-to-date
Advanced Responsive Video Embedder
BackupBuddy
Debug This
Gravity Forms
iThemes Security
Post Types Order
Regenerate Thumbnails
Share Buttons by AddToAny
Shortcodes Ultimate
Shortcodes Ultimate: Extra Shortcodes
Shortcodes Ultimate: Additional Skins
The Events Calendar
TinyMCE Advanced

PHP Error messages:

Notice: Undefined index: pluginVer in /wp-content/plugins/wp-post-to-pdf-enhanced/wp-post-to-pdf-enhanced.php on line 68
Notice: Undefined index: pluginVer in /wp-content/plugins/wp-post-to-pdf-enhanced/wp-post-to-pdf-enhanced.php on line 69
Notice: Undefined index: footerFill in /wp-content/plugins/wp-post-to-pdf-enhanced/wp-post-to-pdf-enhanced.php on line 618
Notice: Undefined index: footerPad in /wp-content/plugins/wp-post-to-pdf-enhanced/wp-post-to-pdf-enhanced.php on line 620
Notice: Undefined index: pluginVer in /wp-content/plugins/wp-post-to-pdf-enhanced/wp-post-to-pdf-enhanced.php on line 634

https://ww.wp.xz.cn/plugins/wp-post-to-pdf-enhanced/