Bad server response on Synology DSM DS215j

[emillod]

Hello
i have EspoCRM in my local network on machine NAS Synology DSM DS215j on PHP 7 and Apache.
When i'm trying have access to task i have error "Bad server response", but after that task is loading without any problem.
Can anyone tell me how to fix this "Bad server response" error?

[tanya]

Hello
Check espocrm log ({espocrm_path}/data/logs) or apache error log

[emillod]

Here you have log:
[2017-05-15 01:02:04] Espo.ERROR: Uncaught Exception PDOException: "SQLSTATE[HY000] [2002] Connection refused" at /application/Espo/ORM/EntityManager.php line 138 {"exception":"[object] (PDOException(code: 2002): SQLSTATE[HY000] [2002] Connection refused at /application/Espo/ORM/EntityManager.php:138)"} []

[emillod]

I open FTP and delete in %app%/client/ all files with Task in name, because i have only this error in Module TASKS. And now i cant open Entity Manager, i have just notification "Loading..."

Any ideas?

[emillod]

I recovery those files and still have error in Task.. Any ideas?