# 系統升級

**omv-release-upgrade**

![](/files/-Lp_g0DBqEmT-tqfIsQS)

![](/files/-Lp_fWh-AlL4JSuTjHnF)

![](/files/-LpaTk0qLqo7P7-oQOiQ)

```
Error #0: OMV\Exception: Failed to read file '/var/cache/openmediavault/cache.omv\controlpanel\login_js.json' (size=0). in /usr/share/php/openmediavault/json/file.inc:207 Stack trace: #0 /usr/share/php/openmediavault/json/file.inc(223): OMV\Json\File->getContents() #1 /usr/share/php/openmediavault/controlpanel/controlpanelabstract.inc(173): OMV\Json\File->read() #2 /var/www/ope
```

已安裝omv-extras ，請運行omv-aptclean 。還要清除瀏覽器緩存

```
omv-aptclean 
```

![](/files/-LpaU0jyTtufz-ULUZsX)


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