cPanel: Warning: fopen(/tmp/horde_.log): failed to open

Sometimes you may get the following error in cPanel:

Warning: fopen(/tmp/horde_32001.log): failed to open stream: Permission denied in /usr/local/cpanel/3rdparty/lib/php/Log/file.php on line 202
Warning: Cannot modify header information – headers already sent by (output started at /usr/local/cpanel/3rdparty/lib/php/Log/file.php:202) in /usr/local/cpanel/base/horde/login.php on line 96

It can be due to one of following reasons:

1. If /tmp has wrong permissions

Make sure that /tmp has correct permissions,We can use following command to correct the permissions for /tmp . 

chmod 1777 /tmp

2. The /tmp/horde_32001.log file has incorrect permissions or the group/owner user level is incorrectly assigned.

To correct this:

chown cpanel:cpanel /tmp/horde_32001.log
chmod 0644 /tmp/horde_32001.log