Blank Page on manager/plugins OJS (2.4.8)

rafaelmansilha · March 30, 2016, 7:07pm

Sometimes, when we try to access the plugins manager pages, we get a blank page.

On the php log we get the following track:

[Wed Mar 30 15:23:01 2016] [error] [client xx.xxx.xx.xx] ojs2 has produced an error
Message: WARNING: assert() [<a href='function.assert'>function.assert</a>]: Assertion failed
In file: /~/ojs/lib/pkp/classes/plugins/PluginRegistry.inc.php
At line: 241
Stacktrace: 
File: (unknown) line (unknown)
Function: PKPApplication->errorHandler(2, "assert() [&lt;a href='function.assert'&gt;function.assert&lt;/a&gt;]: Assertion failed", "/~/ojs/lib/pkp/classes/plugins/PluginRegistry.inc.php", 241, Array(7))
File: /~/ojs/lib/pkp/classes/plugins/PluginRegistry.inc.php line 241
Function: assert(False)
File: /~/ojs/lib/pkp/classes/plugins/PluginRegistry.inc.php line 121
Function: PluginRegistry->_instantiatePlugin("reports", "plugins/reports", "counter")
File: /~/ojs/pages/manager/PluginHandler.inc.php line 53
Function: PluginRegistry->loadCategory("reports")
File: (unknown) line (unknown)
Function: PluginHandler->plugins(Array(0), Object(Request))
File: /~/ojs/lib/pkp/classes/core/PKPRouter.inc.php line 362
Function: call_user_func(Array(2), Array(0), Object(Request))
File: /~/ojs/lib/pkp/classes/core/PKPPageRouter.inc.php line 220
Function: PKPRouter->_authorizeInitializeAndCallRequest(Array(2), Object(Request), Array(0), False)
File: /~/ojs/lib/pkp/classes/core/Dispatcher.inc.php line 134
Function: PKPPageRouter->route(Object(Request))
File: /~/ojs/lib/pkp/classes/core/PKPApplication.inc.php line 178
Function: Dispatcher->dispatch(Object(Request))
File: /~/ojs/index.php line 64
Function: PKPApplication->execute()
Server info:
OS: Linux
PHP Version: 5.2.9
Apache Version: Apache/2.2.0 (Fedora) mod_perl/2.0.4 Perl/v5.10.0
DB Driver: mysql
DB server version: 5.6.14-log

hermann · March 30, 2016, 8:36pm

Hi @rafaelmansilha,

is always
_instantiatePlugin("reports", "plugins/reports", "counter")
part of that stack-trace in you log files?
Or are there other parameters to that function that do cause the problem as well?

What is the content of the
plugins/reports/counter
directory inside your OJS installation?

Greetings
Hermann

rafaelmansilha · March 31, 2016, 1:24pm

Hi @hermann,

_instantiatePlugin("reports", "plugins/reports", "counter") is always part of that stack-trace in my log files.
As I’ve said, it happens sometimes, but quite often.

The Content on plugins/reports/counter is:

plugins/reports/counter/:
classes  counter_monthly_log_1_1.xml  CounterReportPlugin.inc.php  index.php  locale  templates  version.xml

plugins/reports/counter/classes:
COUNTER  CounterReport.inc.php  LegacyJR1.inc.php  reports

plugins/reports/counter/classes/COUNTER:
COUNTER.php  LICENSE.txt  README.md

plugins/reports/counter/classes/reports:
CounterReportAR1.inc.php  CounterReportJR1.inc.php

plugins/reports/counter/locale:
ar_IQ  ca_ES  cs_CZ  da_DK  de_DE  el_GR  en_US  es_ES  eu_ES  fa_IR  fr_CA  fr_FR  hr_HR  id_ID  it_IT  ja_JP  nl_NL  no_NO  pt_BR  pt_PT  ro_RO  ru_RU  sr_SR  tr_TR  uk_UA  vi_VN  zh_CN  zh_TW

plugins/reports/counter/locale/ar_IQ:
locale.xml

plugins/reports/counter/locale/ca_ES:
locale.xml

plugins/reports/counter/locale/cs_CZ:
locale.xml

plugins/reports/counter/locale/da_DK:
locale.xml

plugins/reports/counter/locale/de_DE:
ar1.xml  jr1.xml  locale.xml

plugins/reports/counter/locale/el_GR:
locale.xml

plugins/reports/counter/locale/en_US:
ar1.xml  jr1.xml  locale.xml

plugins/reports/counter/locale/es_ES:
locale.xml

plugins/reports/counter/locale/eu_ES:
locale.xml

plugins/reports/counter/locale/fa_IR:
locale.xml

plugins/reports/counter/locale/fr_CA:
locale.xml

plugins/reports/counter/locale/fr_FR:
locale.xml

plugins/reports/counter/locale/hr_HR:
locale.xml

plugins/reports/counter/locale/id_ID:
locale.xml

plugins/reports/counter/locale/it_IT:
locale.xml

plugins/reports/counter/locale/ja_JP:
locale.xml

plugins/reports/counter/locale/nl_NL:
locale.xml

plugins/reports/counter/locale/no_NO:
locale.xml

plugins/reports/counter/locale/pt_BR:
locale.xml

plugins/reports/counter/locale/pt_PT:
locale.xml

plugins/reports/counter/locale/ro_RO:
locale.xml

plugins/reports/counter/locale/ru_RU:
ar1.xml  jr1.xml  locale.xml

plugins/reports/counter/locale/sr_SR:
locale.xml

plugins/reports/counter/locale/tr_TR:
locale.xml

plugins/reports/counter/locale/uk_UA:
locale.xml

plugins/reports/counter/locale/vi_VN:
locale.xml

plugins/reports/counter/locale/zh_CN:
locale.xml

plugins/reports/counter/locale/zh_TW:
locale.xml

plugins/reports/counter/templates:
index.tpl  reportxml.tpl  soaperror.tpl  sushixml.tpl

ctgraham · March 31, 2016, 1:32pm

The new version of the Counter plugin requires PHP 5.3 or better. I see you are at PHP 5.2.9.

Can you update PHP to a later 5.x release?

There is a bit of code in the new plugin which is intended to disable the plugin rather than allow for a fatal error. I’ll check to see why that is not performing as expected.

rafaelmansilha · March 31, 2016, 1:48pm

Hi @ctgraham,

I was suspecting that it would be related to the php version. We intend to update, but it’s tricky because it affects other applications.

Thanks for your support!

ctgraham · March 31, 2016, 2:23pm

In the meantime, try this patch:
https://github.com/ulsdevteam/ojs/commit/cac139b98a58f122d15c9dbdb458e6c446104cda.patch

Report if it works for you so I can request it in core.