[WPMU DEV Dashboard] error message in administration WP

Hi, when I activate the WPMU DEV Dashboard in WP, an error message appears in the bottom of the screen:
Warning: fopen(/home/html/mojwebhostingsk_2_multihost/victory-media.sk/public_html/wp-content/plugins/connects-elasticmail/connects-elastic-email.php): failed to open stream: No such file or directory in /home/html/mojwebhostingsk_2_multihost/victory-media.sk/public_html/wp-includes/functions.php on line 4848

Warning: fread() expects parameter 1 to be resource, boolean given in /home/html/mojwebhostingsk_2_multihost/victory-media.sk/public_html/wp-includes/functions.php on line 4851

Warning: fclose() expects parameter 1 to be resource, boolean given in /home/html/mojwebhostingsk_2_multihost/victory-media.sk/public_html/wp-includes/functions.php on line 4854

In lline 4848 functions.php is this: $fp = fopen( $file, 'r' );
In lline 4851 functions.php is this: $file_data = fread( $fp, 8192 );
In lline 4854 functions.php is this: fclose( $fp );

What do you need to do to make everything OK?

Thanks, Roman