Log in page not working

I installed this plug in keeping my website live. Now the wp-admin log in page is showing errors. Now I can’t log in to my website’s dashboard.

The following msg is showing:

ParseError: 0 in anonymous-file-0.less on line 1, column 839 1| @primary_color : #37e89b;@bg_image : ‘https://www.grambangla.com.bd/wp-content/plugins/tesla-login-customizer/static/themes/mercury/img/wordpress-login-theme-mercury.jpg’;@bg_image_repeat : no-repeat;@bg_image_size_type : cover;@bg_color : undefined;@font_family : Raleway;@font_variations : 100px 300px;@font_subset : undefined;@font_size : 20;@font_color : #ffffff;@redirect_login : ‘https://www.grambangla.com.bd/’;@redirect_register : ‘https://www.grambangla.com.bd/’;@custom_login_url : ‘https://www.grambangla.com.bd/wp-admin’;@template : mercury;@logo_hide : undefined;@logo_image : ‘https://www.grambangla.com.bd/wp-content/uploads/2017/05/Logo.png’;@logo_bg_size_type : cover;@logo_width : 100;@logo_height : 100;@logo_link : ‘https://www.grambangla.com.bd/’;@logo_title : undefined;@form_placement : center;@form_heading : Member’s Login;@form_bg_image : undefined;@form_bg_size_type : cover;@form_bg_image_repeat : no-repeat;@form_bg_color : rgba(30,46,64,0.7);@form_padding : 40px 40px 40px 40px;@form_no_shake : undefined;@form_animation_in : undefined;@form_animation_out : undefined;@form_animation_error : undefined;@form_button_color : #ffffff;@form_button_bg_color : #37e89b;@form_captcha : undefined;@form_captcha_key : undefined;@form_captcha_theme : light;@form_captcha_type : image;@form_captcha_lang : undefined;@custom_css : undefined;@custom_js : undefined;