[OJS-3.5.0-1] Encountering an issue with PDF viewing

[shantanusingh]

OJS-3.5.0-1

We are encountering an issue with PDF viewing in the journal system. When we click on the “PDF” file, the viewer opens, but the PDF content is not displayed. However, if we click on “Download,” the PDF file downloads successfully and opens without any issues.

[15-Sep-2025 15:25:32 UTC] PHP Deprecated:  Using ${var} in strings is deprecated, use {$var} instead in /ojs/plugins/generic/citationStyleLanguage/lib/vendor/seboettg/citeproc-php/src/StyleSheet.php on line 52
[15-Sep-2025 15:25:32 UTC] PHP Deprecated:  Creation of dynamic property Seboettg\CiteProc\Root\Info::$title-short is deprecated in /ojs/plugins/generic/citationStyleLanguage/lib/vendor/seboettg/citeproc-php/src/Root/Info.php on line 62
[15-Sep-2025 15:25:32 UTC] PHP Deprecated:  Creation of dynamic property Seboettg\CiteProc\Root\Info::$category is deprecated in /ojs/plugins/generic/citationStyleLanguage/lib/vendor/seboettg/citeproc-php/src/Root/Info.php on line 62
[15-Sep-2025 15:25:32 UTC] PHP Deprecated:  Creation of dynamic property Seboettg\CiteProc\Root\Info::$updated is deprecated in /ojs/plugins/generic/citationStyleLanguage/lib/vendor/seboettg/citeproc-php/src/Root/Info.php on line 62
[15-Sep-2025 15:25:32 UTC] PHP Deprecated:  Creation of dynamic property Seboettg\CiteProc\Root\Info::$rights is deprecated in /ojs/plugins/generic/citationStyleLanguage/lib/vendor/seboettg/citeproc-php/src/Root/Info.php on line 62
[15-Sep-2025 15:25:32 UTC] PHP Deprecated:  htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated in /ojs/plugins/generic/googleScholar/GoogleScholarPlugin.php on line 120

[asmecher]

Hi @shantanusingh,

See e.g. this thread:

Articles not opening in browser

Hi @rcgillis We recently upgraded our journal platform to OJS 3.5 (xlescience.org). However, we are encountering an issue where uploaded articles are not opening directly in the browser. Instead, they can only be downloaded. Based on the suggestions in the PKP forum, I attempted the following steps: Added the appropriate MIME types Updated the .htaccess file Unfortunately, these changes did not resolve the issue. We also contacted our hosting provider, and they confirmed that the serv…

Regards,
Alec Smecher
Public Knowledge Project Team

[shantanusingh]

Hi @asmecher Thanks for your reply and solution.

I have implemented the below mentioned setting on the server and solved the problem.

Field	Value
MIME Type	application/javascript
Extension	mjs