Got problems with Oxygen Builder

0.7.2 was working fine

Now I can’t load backend builder, it crashes, admin toolbar not working on frontend and some css styles by oxygen is also not working on frontend, and error log is:

2019/09/12 17:09:50 [crit] 3848#3848: *1 open() "/home/admin/web/***.com/public_html/" failed (13: Permission denied), client: *.*.*.*, server: ***.com, request: "GET /?ct_template=base&ct_builder=true&oxygen_iframe=true HTTP/1.1", host: "***.com", referrer: "https://***.com/?ct_template=base&ct_builder=true"
2019/09/12 17:09:50 [error] 3848#3848: *1 FastCGI sent in stderr: "PHP message: PHP Fatal error:  Uncaught Error: Call to undefined function EasyWatermark\Features\get_current_screen() in /home/admin/web/***.com/public_html/wp-content/plugins/easy-watermark/src/classes/Features/AutoWatermarkSwitch.php:36
Stack trace:
#0 /home/admin/web/***.com/public_html/wp-includes/class-wp-hook.php(284): EasyWatermark\Features\AutoWatermarkSwitch->pre_plupload_upload_ui()
#1 /home/admin/web/***.com/public_html/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters('', Array)
#2 /home/admin/web/***.com/public_html/wp-includes/plugin.php(465): WP_Hook->do_action(Array)
#3 /home/admin/web/***.com/public_html/wp-includes/media-template.php(250): do_action('pre-plupload-up...')
#4 /home/admin/web/***.com/public_html/wp-includes/class-wp-hook.php(286): wp_print_media_templates('')
#5 /home/admin/web/***.com/public_html/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array)
#6 /home/admin/web/***.com/public_html/wp-includes/plugin.php(465)" while reading response header from upstream, client: *.*.*.*, server: ***.com, request: "GET /?ct_template=base&ct_builder=true&oxygen_iframe=true HTTP/1.1", upstream: "fastcgi://127.0.0.1:9001", host: "***.com", referrer: "https://***.com/?ct_template=base&ct_builder=true"

after disabling easy watermark everything works fine