Backup package Mysql error

On an active online WordPress server I’m unable to prepare packages for backup operation. On last January it work good. See duplicator log.

Please Help

/* DUPLICATOR_MYSQLDUMP_EOF */
TRACE:
	 1. class.pack.database.php : error (597)
	 2. class.pack.database.php : mysqlDump (223)
	 3. class.pack.php : build (1371)
	 4. ctrl.package.php : runZipBuild (89)
	 5. class-wp-hook.php : duplicator_package_build (307)
	 6. class-wp-hook.php : apply_filters (331)
	 7. plugin.php : do_action (474)
	 8. admin-ajax.php : do_action (187)
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DUPLICATOR ERROR
Please try again! If the error persists see the Duplicator 'Help' menu.
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MESSAGE:
	Runtime error in DUP_Database::Build. Shell mysql dump error. Change SQL Mode to the "PHP Code" in the Duplicator > Settings > Packages.
DETAILS:
	Exception: Exception: Shell mysql dump error. Change SQL Mode to the "PHP Code" in the Duplicator > Settings > Packages. in /var/www/html/wp-content/plugins/duplicator/classes/class.logging.php:301
Stack trace:
#0 /var/www/html/wp-content/plugins/duplicator/classes/package/class.pack.database.php(597): DUP_Log::error()
#1 /var/www/html/wp-content/plugins/duplicator/classes/package/class.pack.database.php(223): DUP_Database->mysqlDump()
#2 /var/www/html/wp-content/plugins/duplicator/classes/package/class.pack.php(1371): DUP_Database->build()
#3 /var/www/html/wp-content/plugins/duplicator/ctrls/ctrl.package.php(89): DUP_Package->runZipBuild()
#4 /var/www/html/wp-includes/class-wp-hook.php(307): duplicator_package_build()
#5 /var/www/html/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters()
#6 /var/www/html/wp-includes/plugin.php(474): WP_Hook->do_action()
#7 /var/www/html/wp-admin/admin-ajax.php(187): do_action()
#8 {main}
TRACE:
	 1. class.pack.database.php : error (253)
	 2. class.pack.php : build (1371)
	 3. ctrl.package.php : runZipBuild (89)
	 4. class-wp-hook.php : duplicator_package_build (307)
	 5. class-wp-hook.php : apply_filters (331)
	 6. plugin.php : do_action (474)
	 7. admin-ajax.php : do_action (187)