"Browser cache is being refreshed" error

[rednas]

Hello,

I transferred my Domoticz installation from my Synology NAS to a Raspberry Pi. However, now it is giving those "Browser cache is being refreshed" errors.
I already inspected the page for errors and it mentions an error:
Application Cache Error event: Resource fetch failed (403) http://ip-address:8080/media/handclosed.cur

This is possibly throwing the error, but how do I fix this?

Thanks in advance!

[SweetPants]

Cleared your browser cache already?

[rednas]

I came to the conclusion it was caused by my work laptop. There is a firewall installed which doesn't allow me to download/use the file with the .cur extension...
This is only caused when I access domoticz from the external ip and not from the internal ip.