PHP Upgrade failure 5.4 > 5.6

After trying to upgrade CentOS 7 to php 5.6 I had to roll back to 5.4. After rolling back to 5.4 I am unable to log in to my NextCloud instance. The log file has this:

{"reqId":"R4iV\/4R2GzUsHH40zlwe","remoteAddr":"75.102.3.210","app":"PHP","message":"session_write_close(): open(\/var\/lib\/php\/session\/sess_gaec90tovpp8hfp2suu7otion6, O_RDWR) failed: Permission denied (13) at \/var\/www\/nextcloud\/lib\/private\/Session\/Internal.php#104","level":3,"time":"2017-02-24T17:54:34+00:00","method":"GET","url":"\/index.php\/apps\/files\/","user":"--","version":"9.1.3.2"} {"reqId":"R4iV\/4R2GzUsHH40zlwe","remoteAddr":"75.102.3.210","app":"PHP","message":"session_write_close(): Failed to write session data (files). Please verify that the current setting of session.save_path is correct (\/var\/lib\/php\/session) at \/var\/www\/nextcloud\/lib\/private\/Session\/Internal.php#104","level":3,"time":"2017-02-24T17:54:34+00:00","method":"GET","url":"\/index.php\/apps\/files\/","user":"--","version":"9.1.3.2"} {"reqId":"RenDo\/\/n9HSoQguTfyej","remoteAddr":"75.102.3.210","app":"PHP","message":"session_write_close(): open(\/var\/lib\/php\/session\/sess_hoim20p9bqi0e9vart484b8ff6, O_RDWR) failed: Permission denied (13) at \/var\/www\/nextcloud\/lib\/private\/Session\/Internal.php#104","level":3,"time":"2017-02-24T17:54:35+00:00","method":"GET","url":"\/index.php\/login?redirect_url=%252Findex.php%252Fapps%252Ffiles%252F","user":"--","version":"9.1.3.2"} {"reqId":"RenDo\/\/n9HSoQguTfyej","remoteAddr":"75.102.3.210","app":"PHP","message":"session_write_close(): Failed to write session data (files). Please verify that the current setting of session.save_path is correct (\/var\/lib\/php\/session) at \/var\/www\/nextcloud\/lib\/private\/Session\/Internal.php#104","level":3,"time":"2017-02-24T17:54:35+00:00","method":"GET","url":"\/index.php\/login?redirect_url=%252Findex.php%252Fapps%252Ffiles%252F","user":"--","version":"9.1.3.2"} {"reqId":"m1cgyDh\/GqLF36JR7KeE","remoteAddr":"75.102.3.210","app":"PHP","message":"session_write_close(): open(\/var\/lib\/php\/session\/sess_entrrglpn044h3vjrt30usr0i7, O_RDWR) failed: Permission denied (13) at \/var\/www\/nextcloud\/lib\/private\/Session\/Internal.php#104","level":3,"time":"2017-02-24T17:54:35+00:00","method":"GET","url":"\/index.php\/core\/js\/oc.js?v=b971f0341bc32373c428a9248502d393","user":"--","version":"9.1.3.2"} {"reqId":"m1cgyDh\/GqLF36JR7KeE","remoteAddr":"75.102.3.210","app":"PHP","message":"session_write_close(): Failed to write session data (files). Please verify that the current setting of session.save_path is correct (\/var\/lib\/php\/session) at \/var\/www\/nextcloud\/lib\/private\/Session\/Internal.php#104","level":3,"time":"2017-02-24T17:54:35+00:00","method":"GET","url":"\/index.php\/core\/js\/oc.js?v=b971f0341bc32373c428a9248502d393","user":"--","version":"9.1.3.2"} {"reqId":"ibTRwuVf+5BVeQ1C1hgy","remoteAddr":"75.102.3.210","app":"PHP","message":"session_write_close(): open(\/var\/lib\/php\/session\/sess_p931n5p8jpm8o3upvsak90mvf1, O_RDWR) failed: Permission denied (13) at \/var\/www\/nextcloud\/lib\/private\/Session\/Internal.php#104","level":3,"time":"2017-02-24T17:54:35+00:00","method":"GET","url":"\/cron.php","user":"--","version":"9.1.3.2"} {"reqId":"ibTRwuVf+5BVeQ1C1hgy","remoteAddr":"75.102.3.210","app":"PHP","message":"session_write_close(): Failed to write session data (files). Please verify that the current setting of session.save_path is correct (\/var\/lib\/php\/session) at \/var\/www\/nextcloud\/lib\/private\/Session\/Internal.php#104","level":3,"time":"2017-02-24T17:54:35+00:00","method":"GET","url":"\/cron.php","user":"--","version":"9.1.3.2"}

I am still logged into the iOS and Android apps.

Any ideas?