[Errno 21] Is a directory: '/var/log/letsencrypt/.certbot.lock'

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16

dorian@carry:~$ sudo ls -la /var/log/letsencrypt/
total 172
drwxrwxr-x 3 root dorian 4096 Jul 11 16:03 .
drwxrwxr-x 11 root syslog 4096 Jul 11 07:00 ..
drwxrwxr-x 6 root dorian 4096 Jul 11 16:03 .certbot.lock
-rwxrwxr-x 1 root dorian 159926 Jul 11 14:09 letsencrypt.log
dorian@carry:~$