Hmmm… I ran openhabian-config to solve a repository error, and then I decided to reinstall zram thorugh the menu.
I then rebooted my RPi3B+ but now zram-config complains about a missing file:
$ sudo systemctl status zram-config
● zram-config.service - zram-config
Loaded: loaded (/etc/systemd/system/zram-config.service; enabled; vendor preset: enabled)
Active: active (exited) since Mon 2020-06-01 11:18:18 CEST; 7s ago
Process: 1916 ExecStart=/usr/local/bin/zram-config start (code=exited, status=0/SUCCESS)
Main PID: 1916 (code=exited, status=0/SUCCESS)
Jun 01 11:18:17 openhab zram-config[1916]: mv: cannot stat '/usr/local/share/zram-config/zram-device-list.new': No such file or directory
Jun 01 11:18:17 openhab zram-config[1916]: mv: cannot stat '/usr/local/share/zram-config/zram-device-list.new': No such file or directory
Jun 01 11:18:17 openhab zram-config[1916]: stat: cannot stat 'stat': No such file or directory
Jun 01 11:18:17 openhab zram-config[1916]: stat: cannot stat 'stat': No such file or directory
Jun 01 11:18:17 openhab zram-config[1916]: stat: cannot stat 'stat': No such file or directory
Jun 01 11:18:17 openhab zram-config[1916]: mv: cannot stat '/usr/local/share/zram-config/zram-device-list.new': No such file or directory
Jun 01 11:18:18 openhab zram-config[1916]: stat: cannot stat 'stat': No such file or directory
Jun 01 11:18:18 openhab zram-config[1916]: stat: cannot stat 'stat': No such file or directory
Jun 01 11:18:18 openhab zram-config[1916]: stat: cannot stat 'stat': No such file or directory
Jun 01 11:18:18 openhab systemd[1]: Started zram-config.
How can I fix this?