If you ever setup a Lightsail instance (Linux) and you'll try to access it by SFTP client (Filezilla in this case) you will come with this error:
text
Error: EACCES: permission denied
What's the problem?
Well, it's because of the default permissions (by installation). Quickest and easiest way to solve it is by accessing an ssh terminal of your instance and firing up:
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sudo chown -R bitnami:daemon /opt/bitnami/apps/wordpress/htdocs/wp-content
sudo chmod -R g+w /opt/bitnami/apps/wordpress/htdocs/wp-content
Thanks to this thread!