Fatal error: require(): Failed opening required ‘/home/u250257086/public_html/wp

This might be because of some files getting corrupt while updating the plugin.
As you can access files through filezilla, just the elementor plugin’s folder
/public_html/wp-content/plugins/elementor

Then access the admin and re-install the plugin.

Thankx for you prompt response.
You mean to say that at first i have to access plugin via filezilla then delete elementor. After deleting elementor i will be able to use wp_admin, after that using dashboard is should download elementor again ?

I have not made the website public yet, i was planning to do it tomorrow, i have writen about 14 pages and built a custom homepage, but i have not stored any backup nor written them somewhere else, will all be lost ?

yes you got it right.

Just don’t touch your pages and other settings before re-installing elementor. Nothing will be lost.

You can also try to download Elementor from wordpress repository here.
extract it and then upload it through ftp overriding your existing Elementor folder.

I uploaded elementer from wordpress extracted it and uploaded it through ftp but its still showing the same error…

Fatal error: require(): Failed opening required ‘/home/u250257086/public_html/wp-content/plugins/elementor/includes/plugin.php’ (include_path=’.:/opt/php-5.6/pear’) in /home/u250257086/public_html/wp-content/plugins/elementor/elementor.php on line 41

Really tensed now

The simplest answer to this issue is that the file – /wp-content/plugins/elementor/includes/plugin.php – still doesn’t exist, or doesn’t exist at the correct location. Can you access wp-admin?