Crossref plugin not working

Software Support
1

The Crossref plugin not working in a single journal features 500 error in the page in the access the option data export in the link DOI manager. My version is OJS 2.4.8.2.

thanks.

2

In your PHP error log, you will find details on the PHP error which will describe what triggered the HTTP 500 response. Please share that message here.

3

This is my log error:

[Tue Apr 23 14:06:15.781289 2019] [fcgid:warn] [pid 5683] (32)Broken pipe: mod_fcgid: ap_pass_brigade failed in handle_request_ipc function
[Tue Apr 23 14:06:27.070160 2019] [fcgid:warn] [pid 6865] mod_fcgid: stderr: NOTICE: Undefined offset: 10 (/plugins/importexport/crossref/classes/PubObjectCache.inc.php:81), referer: /manager/importexport/plugin/CrossRefExportPlugin
[Tue Apr 23 14:06:27.070279 2019] [fcgid:warn] [pid 6865] mod_fcgid: stderr: PHP Fatal error: Call to a member function getPublished() on null in /plugins/importexport/crossref/classes/DOIExportPlugin.inc.php on line 549, referer: /manager/importexport/plugin/CrossRefExportPlugin

4

This error message seems to be the same as the error you describe here:

Is the the same journal or a different journal which exhibits this problem?

5

yes, the same journal.

6

Did you resolve the negative assoc_id values mentioned in the previous thread?

7

Yes, i removed the entries, but the problem persists.

8

Are there new results that match the earlier SQL query of:

SELECT pa.* FROM published_articles pa LEFT JOIN issues i ON (i.issue_id = pa.issue_id) LEFT JOIN articles a ON pa.article_id = a.article_id WHERE (pa.date_published IS NOT NULL OR a.status = 3) AND i.issue_id IS NULL;

?

9

not there are results.