i set uo a site usiing the artisan demo installer and all of a sudden i get a blank website with Error displaying the error page and i cannot log into admin.

any idea how to fix this please?

here are some error that were found by the host
[17-May-2017 08:54:30 UTC] PHP Warning: session_write_close(): Failed to write session data (user). Please verify that the current setting of session.save_path is correct (/var/cpanel/php/sessions/ea-php70) in /home/websitenam/public_html/libraries/joomla/session/handler/native.php on line 194
[17-May-2017 08:59:12 UTC] PHP Warning: session_write_close(): Failed to write session data (user). Please verify that the current setting of session.save_path is correct (/var/cpanel/php/sessions/ea-php70) in /home/websitename/public_html/libraries/joomla/session/handler/native.php on line 194
[17-May-2017 08:59:12 UTC] PHP Warning: session_write_close(): Failed to write session data (user). Please verify that the current setting of session.save_path is correct (/var/cpanel/php/sessions/ea-php70) in /home/websitenam/public_html/libraries/joomla/session/handler/native.php on line 194

i look forward to your reply!