After you upgrade Plesk you receive:
ERROR: PleskFatalException
StatInfo->getProductVersion failed: file_get_contents() failed: mktime() [function.mktime]: It is not safe to rely on the system's timezone settings. Please use the date.timezone setting, the TZ environment variable or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'UTC' for 'GMT/0.0/no DST' instead
0: /usr/local/psa/admin/plib/common_func.php3:108
psaerror(string 'StatInfo->getProductVersion failed: file_get_contents() failed: mktime() [function.mktime]: It is not safe to rely on the system's timezone settings. Please use the date.timezone setting, the TZ environment variable or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'UTC' for 'GMT/0.0/no DST' instead')
1: /usr/local/psa/admin/plib/common_func.php3:66
getProductLoginVersion()
2: /usr/local/psa/admin/plib/sso/SP.php:101
ssoGetSpName()
3: /usr/local/psa/admin/plib/sso/SP.php:393
SsoSpConfig->load()
4: /usr/local/psa/admin/plib/sso/SP.php:215
SsoSpConfig->__construct()
5: /usr/local/psa/admin/plib/sso/SP.php:223
SsoSpConfig::getInstance()
6: /usr/local/psa/admin/plib/sso/SP.php:447
SsoSpConfig()
7: /usr/local/psa/admin/plib/sso/RelyingParty.php:19
isSsoEnabled()
8: /usr/local/psa/admin/auto_prepend/auth.php3:195
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What this means: You will find that the /usr/local/psa/version file is 0 byte or empty
This file must be edited with one line including the current Plesk and CentOS Version
Here is an EXAMPLE (DO NOT USE THIS ONE) of the contents:Â 9.5.3 CentOS 5 95101022.10
In order to find the information for YOUR server,
With this information build the line for the "version" file: 9.2.3 CentOS 5Â 95101022.10