error 500 when trying to update

[jbalta]

hello, when trying to upgrade from 4.1.5 to 4.1.6 version.
I get the following error:

Error 500: Error while rebuilding database. See log file for details.

and enter the file the following is displayed

[16-Jun-2016 23:50:01 UTC] PHP Fatal error: Class 'PDO' not found in /home/m1nbz9221/public_html/crm/application/Espo/ORM/EntityManager.php on line 138
[17-Jun-2016 00:00:01 UTC] PHP Fatal error: Class 'PDO' not found in /home/m1nbz9221/public_html/crm/application/Espo/ORM/EntityManager.php on line 138

How can I solve this problem?

[AlexAv]

Reason: PDO is not installed

For Ubuntu

install php5-mysql
service restart apache2

For CentOS

yum install php-pdo
service httpd restart

[jbalta]

hello, I auditioned AlexAv up a clean version 4.1.5 espocrm and successfully upgrade to version 4.1.6.

But I can not do it in the version that I'm working.

-- in the error file is as follows:

[01-Jul-2016 02:59:14 UTC] PHP Parse error: syntax error, unexpected ''Propo' (T_ENCAPSED_AND_WHITESPACE), expecting ')' in /home/m1nbz98/public_html/crm/data/cache/application/metadata.php on line 5424
[01-Jul-2016 14:15:57 UTC] PHP Parse error: syntax error, unexpected end of file, expecting ')' in /home/m1nbz98/public_html/crm/data/cache/application/metadata.php on line 1003
[01-Jul-2016 14:19:25 UTC] PHP Parse error: syntax error, unexpected ''varcha' (T_ENCAPSED_AND_WHITESPACE) in /home/m1nbz98/public_html/crm/data/cache/application/ormMetadata.php on line 10222

[AlexAv]

hello, if installed attached PDO info.php

The PDO extention is installed. This is different error.

Try to rename directory:
/home/m1nbz98/public_html/crm/data/cache/
/home/m1nbz98/public_html/crm/data/cache1/

[jbalta]

thanks for answering.
I did what you told me but still dating the same error.

I created several tables in the database to use a chat, it will not be for these new tables that get the error?

[yuri]

Solved. database was messed up with another chat application.

[jbalta]

that was the problem, thanks for your great support