OMV\Exception: Failed to open file (filename=/var/cache/openmediavault/cache.omv\controlpanel\login_js.json, mode=w+) baracudaz 30. Juli 2020 Hello,I came across the same issue during my first installation. The hint about permissions helped me to fix my issue. Code # chown -R openmediavault-webgui:openmediavault-webgui /var/cache/openmediavault