[Solved] Page Tree giving an error (doesn't work) PW 3.0.39

[Xonox]

Hi,

I updated a site from version 2. something, can't recall for sure, to version 3.0.39. All is working fine on local server. However, when I uploaded to online server, the page tree display stopped working.

1. Whenever I try to access the page tree it gives an alert with the text: Uknown error, please try again later

On the console I can see the following:

GET http://mysite.com/admin/page/list?id=1&renderJSON&start=0&open=undefined&mode=actions 500 (Internal Server Error) JqueryCore.js?v=1478723146:2

2. Whenever I try to access the page children (when editing a page) it gives an alert with the text: Uknown error, please try again later

On the console I can see the following:

Failed to load resource: the server responded with a status 500  http://mysite.com/admin/page/list?id=1040&renderJSON&start=0&lang=0&open=undefined&mode=actions (Internal Server Error)

 

When I was updating, I got an error on the site config.php file. I forgot to update the $config->httpHosts for the domain in the new server, which was corrected after the update.

The server is running PHP 5.4, MySQL 5.5.52, PW updated to 3.0.39

Any clues?

[Macrura]

Have you checked the folder and file permissions, after uploading?

[Robin S]

Do you have debug mode on? Any PHP notices? I think I had an issue a while ago where a PHP deprecated notice was interfering with with the tree AJAX response.

[Xonox]

Hi,

@Robin S, after turning on the debug mode, it was all looking fine.

@Macrura, when I was looking for the directories' permissions, I came across a post that recommended to delete the cache folders, so I did and everything was working fine.

Thank's guys, for sending me through the right path!

I also skipped this step on my local server so it´s a bit strange that this would have any influence. But it did.

Solution
Delete the session and cache files in the /site/assets directory.