Task load error

good afternoon, I have problems since the tasks do not load and show me that I have four, then I do not know how to solve this problem, if someone could help me I would greatly appreciate it, the data of my eyes are:
Linux OS Platform
PHP version 5.6.32-1 ~ dotdeb + zts + 7.1
Apache version Apache / 2.2.22 (Debian)
Driver of the mysql database
Database server version 5.5.58-0 + deb7u1
Current version: 3.1.0.0 (November 29, 2017 - 02:19)

However I do not know why I get version 3.1 and update to version 3.2. but the main problem is that of tasks.

task

Hi @geek,

I’m not sure what you mean about version 3.1 vs version 3.2, but for the tasks issue, check your PHP error log for details.

Regards,
Alec Smecher
Public Knowledge Project Team

Where can I see that?

Hi @geek,

See this FAQ entry.

Regards,
Alec Smecher
Public Knowledge Project Team

solve it using this method

https://github.com/pkp/pkp-lib/issues/1844#issuecomment-251103339