plugin creates critical error

in the below file change the code like below at the top
modal-for-elementor/widgets/popup.php basically use Elementor\Scheme_Typography; has to come on top.

use Elementor\Scheme_Typography;
namespace ElementorModal\Widgets;

use Elementor\Widget_Base;
use Elementor\Controls_Manager;
use Elementor\Group_Control_Typography;

use Elementor\Scheme_Color;
use Elementor\Group_Control_Border;
use Elementor\Group_Control_Background;
use Elementor\Group_Control_Box_Shadow;
use Elementor\Frontend;
use WP_Query;

Will you be updated and compatible with the latest Elementor upgrade? I see this plugin as flagged for lack of compatibility. I too have experienced problems on both staging & production sites with two remedies…deactivate your plugin, or revert to back-up with previous version of Elementor.

Kind Regards,
Evan

@generactevan Hi No I am not the plugin developer and the fix I give will make the plugin work.
I am an Individual developer and got a client came up with the error. fixed it for them and updated the solution over here.

Thanks.

I have the same problem. Critical error. Here is my error log:
Fatal error: Uncaught Error: Class "Elementor\Scheme_Typography" not found in /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/modal-for-elementor/widgets/popup.php:185 Stack trace: #0 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/elementor/includes/base/controls-stack.php(2280): ElementorModal\Widgets\ElementorModal->_register_controls() #1 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/elementor/includes/base/controls-stack.php(494): Elementor\Controls_Stack->init_controls() #2 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/elementor/includes/base/widget-base.php(177): Elementor\Controls_Stack->get_stack() #3 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/elementor/includes/base/controls-stack.php(300): Elementor\Widget_Base->get_stack() #4 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/elementor/includes/base/controls-stack.php(2369): Elementor\Controls_Stack->get_controls() #5 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/elementor/includes/base/controls-stack.php(1105): Elementor\Controls_Stack->sanitize_settings() #6 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/elementor/includes/base/controls-stack.php(2116): Elementor\Controls_Stack->get_data() #7 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/elementor/core/base/base-object.php(142): Elementor\Controls_Stack->get_init_settings() #8 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/elementor/core/base/base-object.php(40): Elementor\Core\Base\Base_Object->ensure_settings() #9 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/elementor/core/files/css/post.php(296): Elementor\Core\Base\Base_Object->get_settings() #10 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/elementor/core/files/css/post.php(226): Elementor\Core\Files\CSS\Post->render_styles() #11 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/elementor/core/files/css/post.php(298): Elementor\Core\Files\CSS\Post->add_controls_stack_style_rules() #12 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/elementor/core/files/css/post.php(226): Elementor\Core\Files\CSS\Post->render_styles() #13 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/elementor/core/files/css/post.php(298): Elementor\Core\Files\CSS\Post->add_controls_stack_style_rules() #14 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/elementor/core/files/css/post.php(178): Elementor\Core\Files\CSS\Post->render_styles() #15 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/elementor/core/files/css/base.php(632): Elementor\Core\Files\CSS\Post->render_css() #16 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/elementor/core/files/base.php(180): Elementor\Core\Files\CSS\Base->parse_content() #17 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/elementor/core/files/css/base.php(131): Elementor\Core\Files\Base->update_file() #18 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/elementor/core/files/css/base.php(218): Elementor\Core\Files\CSS\Base->update() #19 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/elementor/core/files/css/post.php(201): Elementor\Core\Files\CSS\Base->enqueue() #20 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/elementor/includes/frontend.php(639): Elementor\Core\Files\CSS\Post->enqueue() #21 /var/www/vhosts/saharchitects.lu/httpdocs/wp-includes/class-wp-hook.php(307): Elementor\Frontend->enqueue_styles() #22 /var/www/vhosts/saharchitects.lu/httpdocs/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters() #23 /var/www/vhosts/saharchitects.lu/httpdocs/wp-includes/plugin.php(474): WP_Hook->do_action() #24 /var/www/vhosts/saharchitects.lu/httpdocs/wp-includes/script-loader.php(2105): do_action() #25 /var/www/vhosts/saharchitects.lu/httpdocs/wp-includes/class-wp-hook.php(307): wp_enqueue_scripts() #26 /var/www/vhosts/saharchitects.lu/httpdocs/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters() #27 /var/www/vhosts/saharchitects.lu/httpdocs/wp-includes/plugin.php(474): WP_Hook->do_action() #28 /var/www/vhosts/saharchitects.lu/httpdocs/wp-includes/general-template.php(3042): do_action() #29 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/themes/architecturer/header.php(48): wp_head() #30 /var/www/vhosts/saharchitects.lu/httpdocs/wp-includes/template.php(770): require_once('...') #31 /var/www/vhosts/saharchitects.lu/httpdocs/wp-includes/template.php(716): load_template() #32 /var/www/vhosts/saharchitects.lu/httpdocs/wp-includes/general-template.php(48): locate_template() #33 /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/themes/architecturer/page.php(34): get_header() #34 /var/www/vhosts/saharchitects.lu/httpdocs/wp-includes/template-loader.php(106): include('...') #35 /var/www/vhosts/saharchitects.lu/httpdocs/wp-blog-header.php(19): require_once('...') #36 /var/www/vhosts/saharchitects.lu/httpdocs/index.php(17): require('...') #37 {main} thrown in /var/www/vhosts/saharchitects.lu/httpdocs/wp-content/plugins/modal-for-elementor/widgets/popup.php on line 185

@sbhuvan, I tried editing the widget popup.php as you said, and I then got a critical error on the entire website.

Is there really no other support for this plugin than this forum? We need this to be fixed asap! Our clients cannot download our guides. This is a serious problem and we need help with it.

My solution:
deleted this plugin
install Premium Addons for Elementor
it has a modal widget that does the same and can be triggered by a button
no need for separate post for the popup it is all in the widget.

I used this plugin on a number of sites – luckily in most cases it was in a template so only had to change it in one place.

Ok, thanks. Meanwhile, I tried restoring to an earlier backup with Updraft Plus and just crashed my entire site. So bigger problems to deal with now.

@saharch I am not sure if I can share my personal details here.
I do offer wordpress bug fix service.
you can rename this plugin folder if it still dont work you can reach me.

Thank you @sbhuvan, at the moment I have some support helping me, but if I get stuck, I might come back to you.

Elementor support helped me get the website back and thank you @eyeswiseopen! That was a very good solution.

For anyone experiencing the same issue, I was able to fix it by changing the scheme values on line 185
from:

'scheme' => Scheme_Typography::TYPOGRAPHY_4,

to:

'scheme' => \Elementor\Core\Schemes\Typography::TYPOGRAPHY_4,

same as Scheme_Color on line 446
from:

'type' => Scheme_Color::get_type(),
'value' => Scheme_Color::COLOR_4,

to:

'type' => \Elementor\Core\Schemes\Color::get_type(),
'value' => \Elementor\Core\Schemes\Color::COLOR_1,

@mwbarican does seem to fix the issue – This is in the file popup.php

I also found an instance in popup-load.php on line 191 that I would recommend making the same change to Scheme_Typography

None of the suggested fixes worked for me. Too bad. This plugin worked great for a long time. Will have to look for a substitute.