As per the subject, I am unable to insert images into K2 articles. It was working previously but stopped since yesterday. It just gets redirected to administrator/index.php and leads to a white page with no errors. I am able to upload through the media manager, but still unable to insert images to K2 items.

Joomla 3.9.15 [Stable]
K2 2.10.2


Any pointers will be appreciated.

Thanks, done that... still nothing... just white page..

Thanks Fotis,

I have looked at the plugins and the only ones with K2 interface are Google Structured Data, Smart Search, Search and System. I have disabled Google Structured Data plugin, but no impact. I also disabled recaptcha and Optimize plugins but again no impact.
I turned on the error reporting in PHP settings as well, but no impact.
I looked at the errors in Cpanel, and the message in error log reads: No recent web server errors exist for your domain: xxxxxxxx.com

I tried to unpublish different plugins and updated the template and it seems to have worked. I am now able to upload images. But still don't understand why errors were not being displayed. Anyhow, it seems to have worked for now.

Thanks for your quick responses.