Warning: fread() expects parameter 1 to be resource
Error
When I was migrating my page from localhost to production server, I got this warning message:
Warning: fread() expects parameter 1 to be resource, boolean given in .../www/wp-includes/functions.php on line 4837
The only article mentioning this issue is this one in the wordpress support thread. But the author of the plugin doesn’t address the issue. @kernel52 says you should
a) change the theme of the website
b) disable and re-enable the plugin
c) then switch back to the theme you were using
but that doesn’t worked for me.
Solution
After more investigation I have found the code in functions.php that was causing the issue. I think it’s because of the freemium feature. What worked for me is:
1. change $__DIR variable on line 26
// $__DIR = dirname( __FILE__ ); $__DIR = plugin_dir_path( __FILE__ );
2. comment out the freemium feature on line 71:
require_once $__DIR . '/analytics/initialize.php'; // require_once $__DIR . '/analytics/initialize.php';
3. navigate from the plugins page somewhere else. (don’t test it while you are in plugins page).
And that’s it. Hope it helped.