Error at login: Notice: Undefined index:

Custom Login Page Customizer developers can you help fix? Top of page displays:

Notice: Undefined index: logincust_logo_height in /www/wp-content/plugins/login-customizer/inc/customizer/custom-code.php on line 54 Deprecated: login_headertitle is deprecated since version 5.2.0! Use login_headertext instead. Usage of the title attribute on the login logo is not recommended for accessibility reasons. Use the link text instead. in /wordpress/wp-includes/functions.php on line 5088

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