WordPress stopped generating image thumbnails after changing hosting environment

I moved my WP website from shared hosting, to Digital Ocean LEMP stack droplet. I noticed that thumbnails aren't generated any more for new post featured images, I also tried manually regenarating thumbnails for specific images, it succeeds but nothing generated.

I tried deactivation of the Force Regenerate Thumbnails plugin and activating it again, but still no luck.

Any ideas?

Topic post-thumbnails Wordpress

Category Web

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