Jenkins server doesn't spin up: /var/jenkins_home/copy_reference_file.log': Permission denied

[aimestereo]

ECS Jenkins server fails to start with this error:

November 30, 2023 at 19:06 (UTC+3:00) | Can not write to /var/jenkins_home/copy_reference_file.log. Wrong volume permissions? 
November 30, 2023 at 19:06 (UTC+3:00) | touch: cannot touch '/var/jenkins_home/copy_reference_file.log': Permission denied

November 30, 2023 at 19:06 (UTC+3:00)	Can not write to /var/jenkins_home/copy_reference_file.log. Wrong volume permissions?
November 30, 2023 at 19:06 (UTC+3:00)	touch: cannot touch '/var/jenkins_home/copy_reference_file.log': Permission denied