[3.5.0.3] Error on install/upgrade plugins through Plugin Gallery (Path cannot be empty)

[geniusdesign]

Hello!

I upgraded an OJS 3.5.0.1 installation to 3.5.0.3 and now I can not install or upgrade plugins through Plugin Gallery.

This is the error:

PHP Fatal error:  Uncaught ValueError: Path cannot be empty in /lib/pkp/controllers/grid/plugins/PluginGalleryGridHandler.php:302
Stack trace:
#0 /lib/pkp/controllers/grid/plugins/PluginGalleryGridHandler.php(302): SplFileObject->__construct('', 'w')
#1 /lib/pkp/controllers/grid/plugins/PluginGalleryGridHandler.php(278): PKP\controllers\grid\plugins\PluginGalleryGridHandler->installPlugin(Array, Object(APP\core\Request), true)
#2 [internal function]: PKP\controllers\grid\plugins\PluginGalleryGridHandler->upgradePlugin(Array, Object(APP\core\Request))
#3 /lib/pkp/classes/core/PKPRouter.php(327): call_user_func(Array, Array, Object(APP\core\Request))
#4 /lib/pkp/classes/core/PKPComponentRouter.php(265): PKP\core\PKPRouter->_authorizeInitializeAndCallRequest(Array, Object(APP\core\Request), Array)
#5 /lib/pkp/classes/core/Dispatcher.php(157): PKP\core\PKPComponentRouter->route(Object(APP\core\Request))
#6 /lib/pkp/classes/core/PKPApplication.php(429): PKP\core\Dispatcher->dispatch(Object(APP\core\Request))
#7 /index.php(21): PKP\core\PKPApplication->execute()
#8 {main}
  thrown in /lib/pkp/controllers/grid/plugins/PluginGalleryGridHandler.php on line 302

Using php 8.2 on server.

[asmecher]

Hi @geniusdesign,

This appears to be caused by the PHP tempnam function failing to create a temporary file on your system. The manual page might give you some indication why that’s happening. It’s invoked here, using PHP’s sys_get_temp_dir function to determine a location; my guess is that PHP isn’t allowed to create files in that directory for some reason.

Regards,
Alec Smecher
Public Knowledge Project Team