Slow loading wp-admin

#1
Hello,

My wordpress website started to load very slow sometimes for me (admin). Usually it loads very fast but sometimes it don’t even load. I just must wait for a very very long time, to refresh it for N times to get to my website.

The only one thing which I remember that I changed in recent days is migration from LAMP Ubuntu 20 to Openlitespeed Ubuntu 22 and converting all tables from MyISAM to InnoDB.

Also sometimes I get PHP error in Query monitor: strip_tags(): Passing null to parameter #1 ($string) of type string is deprecated+
Query monitor ss: https://snipboard.io/pjxU9G.jpg

I found error in Openlitespeed error.log:
2024-07-16 11:06:49.201257 [INFO] [850] [90.131.35.116:9129-Q:FEBE0F664A7FB194-32#wordpress] Connection idle time too long: 301 while in state: 13 watching for event: 270344, close!
2024-07-16 11:06:49.201303 [INFO] [850] [90.131.35.116:9129-Q:FEBE0F664A7FB194-32] Content len: 0, request line: ‘GET /favicon.ico HTTP/1.1’
2024-07-16 11:06:49.201307 [INFO] [850] [90.131.35.116:9129-Q:FEBE0F664A7FB194-32] Redirect: #1, URL: /index.php
2024-07-16 11:06:49.201312 [INFO] [850] [90.131.35.116:9129-Q:FEBE0F664A7FB194-32#wordpress] HttpExtConnector state: 40, request body sent: 0, response body size: 0, response body sent:0, left in buffer: 0, attempts: 0.
2024-07-16 11:06:49.201314 [INFO] [850] [90.131.35.116:9129-Q:FEBE0F664A7FB194-32#wordpress] External processor is not available.
2024-07-16 11:06:50.019980 [NOTICE] [853] [88.118.71.168:50492-Q:4118AB31BECF9349-360#wordpress] No request delivery notification has been received from LSAPI application, possible dead lock.
2024-07-16 11:06:50.024599 [NOTICE] [851] [78.61.114.179:59558-Q:C2D55509F584D0F9-8#wordpress] No request delivery notification has been received from LSAPI application, possible dead lock.
2024-07-16 11:06:50.024729 [NOTICE] [851] [217.147.47.212:49525-Q:CA72DF8DF256F1C4-16#wordpress] No request delivery notification has been received from LSAPI application, possible dead lock.
2024-07-16 11:06:52.008569 [NOTICE] [851] [217.147.47.212:49525-Q:CA72DF8DF256F1C4-20#wordpress] No request delivery notification has been received from LSAPI application, possible dead lock.
2024-07-16 11:06:52.008633 [NOTICE] [851] [188.69.43.104:8415-Q:2D95002B815943EF-20#wordpress] No request delivery notification has been received from LSAPI application, possible dead lock.
2024-07-16 11:06:52.017226 [NOTICE] [853] [85.232.129.9:60600:HTTP2-5#wordpress] ExtConn timed out while processing.
 
Top