i did it but not working... please help.. super urgent

Not public your account here

yes, updraged to joomla 3.8.7 via ftp n the website not pubic

Dear sir
The solution to this is to create the /tmp folder and ensure that Apache and your account both have write permissions on this folder.
Thanks

Dir sir
Zip library not installed on PHP
The solution to this problem is to contact your system administrator to install the zip library on PHP (note that Apache needs to be restarted once the zip library is installed).
Thanks

I did it, but still not working
Copy failed: /home/k1435172/public_html/tmp/install_5adbd032a6fd9/admin/access.xml to /home/k1435172/public_html/administrator/components/com_joomlaupdate/access.xml
JInstaller: :Install: Failed to copy file /home/k1435172/public_html/tmp/install_5adbd032a6fd9/admin/access.xml to /home/k1435172/public_html/administrator/components/com_joomlaupdate/access.xml
Component Update: Failed to copy administrator files