Fatal error: Uncaught Error: Call to a member function switch_to_locale() on null in /home/customer/www/deltadentaloffice.com/public_html/wp-includes/l10n.php:1679 Stack trace: #0 /home/customer/www/deltadentaloffice.com/public_html/wp-admin/includes/misc.php(137): switch_to_locale('en_CA') #1 /home/customer/www/deltadentaloffice.com/public_html/wp-content/plugins/shortpixel-image-optimiser/class/Tools.php(285): insert_with_markers('/home/customer/...', 'ShortPixelWebp', Array) #2 /home/customer/www/deltadentaloffice.com/public_html/wp-content/plugins/shortpixel-image-optimiser/class/Helper/InstallHelper.php(44): ShortPixelTools::alterHtaccess(false, false) #3 /home/customer/www/deltadentaloffice.com/public_html/wp-content/plugins/shortpixel-image-optimiser/class/Helper/InstallHelper.php(18): ShortPixel\Helper\InstallHelper::deactivatePlugin() #4 /home/customer/www/deltadentaloffice.com/public_html/wp-content/plugins/shortpixel-image-optimiser/shortpixel-plugin.php(683): ShortPixel\Helper\InstallHelper::activatePlugin() # in /home/customer/www/deltadentaloffice.com/public_html/wp-includes/l10n.php on line 1679