windo31 on "Media library"

Hi, windo31, & welcome to the WordPress support forum.

You've got an awful lot of plugins there. Think about using only those that are necessary for the functioning of your site. Excessive plugins can slow a site down, create conflicts, & risk containing vulnerabilities that criminals can exploit in order to compromise your site.

You don't give us a site url, which is often decidedly helpful in troubleshooting problems such as this. If you are not running a default theme, then I would suggest switching to one & see if the problem resolves. If it does, then you know your theme is at fault. If that does not fix the problem, then please proceed to the suggestions below.

You don't tell us what version of WordPress you're actually running, although you do indicate that you update frequently, which would lead us to believe you're running the latest version. Please confirm or deny that.

The first thing to try in situations like these is to try to determine if your site is throwing any errors. To do this, try the following:
1) Open wp-config.php in either your hosting provider's file manager or using an FTP (preferably secure FTP) client.
2) Change wp-debug from false to true. Visit your dashboard to see if any errors are being displayed. Please copy & paste those into your next reply. Tu this off immediately once you've obtained the information, as it is a security risk to your site.
3) Look in your WordPress folder, & perhaps themes & plugins folders as well, for files called error.log or error_log. See if those contain any recent entries & copy & paste representative examples into your next reply.
4) Often hosts provide an aplet in their control panel that displays error entries from the server logs. Try logging into your hosting control panel & see if your host provides that. If so, & if there are entries, then copy & paste a representative sampling into your next response as well. You may wish to enclose the entries in , i.e.,

entry 1
entry 2
entry 3

- - , .
.