( ! ) Fatal error: Uncaught TypeError: ftp_pwd(): Argument #1 ($ftp) must be of type FTP\Connection, null given in /mnt/ittisadev_vol/RG_KAPMEA_MARK_apacdvg/wordpress/wp-admin/includes/class-wp-filesystem-ftpext.php on line 230
( ! ) TypeError: ftp_pwd(): Argument #1 ($ftp) must be of type FTP\Connection, null given in /mnt/ittisadev_vol/RG_KAPMEA_MARK_apacdvg/wordpress/wp-admin/includes/class-wp-filesystem-ftpext.php on line 230
Call Stack
#	Time	Memory	Function	Location
1	0.0028	534864	{main}( )	.../index.php:0
2	0.0028	535216	require( '/mnt/ittisadev_vol/RG_KAPMEA_MARK_apacdvg/wordpress/wp-blog-header.php )	.../index.php:17
3	0.0028	535632	require_once( '/mnt/ittisadev_vol/RG_KAPMEA_MARK_apacdvg/wordpress/wp-load.php )	.../wp-blog-header.php:13
4	0.0030	545072	require_once( '/mnt/ittisadev_vol/RG_KAPMEA_MARK_apacdvg/wordpress/wp-config.php )	.../wp-load.php:50
5	0.0030	546728	require_once( '/mnt/ittisadev_vol/RG_KAPMEA_MARK_apacdvg/wordpress/wp-settings.php )	.../wp-config.php:112
6	0.3985	8087392	do_action( $hook_name = 'plugins_loaded' )	.../wp-settings.php:593
7	0.3985	8087608	WP_Hook->do_action( $args = [0 => ''] )	.../plugin.php:522
8	0.3985	8087608	WP_Hook->apply_filters( $value = '', $args = [0 => ''] )	.../class-wp-hook.php:365
9	0.7755	14171056	RevSliderPluginUpdate::do_update_checks( '' )	.../class-wp-hook.php:341
10	0.7757	14172032	RevSliderPluginUpdate->upgrade_template_library_to_7_0_4( )	.../upgrade.class.php:77
11	0.7758	14172968	WP_Filesystem_FTPext->is_dir( $path = '/mnt/ittisadev_vol/RG_KAPMEA_MARK_apacdvg/wordpress/wp-content/uploads/revslider/templates/' )	.../upgrade.class.php:631
12	0.7758	14172968	WP_Filesystem_FTPext->cwd( )	.../class-wp-filesystem-ftpext.php:468
13	0.7758	14172968	ftp_pwd( $ftp = NULL )	.../class-wp-filesystem-ftpext.php:230