Cannot play files

Hi,
I've had Serviio running for many years and then a few months ago it stopped playing video's on all devices Samsung UA55RU7400KXXT TV, iPhone 8Player , AppleTV 8Player. Then it stopped playing all files, I can still see all the folders that are shared and all the files in those folders.
On the iPhone I get an Error Initialization failed message. No messages on the other devices.
Serviio 2.1
OSX 10.13.6
log attached
Any help would be gratefully received!
Thanks
I've had Serviio running for many years and then a few months ago it stopped playing video's on all devices Samsung UA55RU7400KXXT TV, iPhone 8Player , AppleTV 8Player. Then it stopped playing all files, I can still see all the folders that are shared and all the files in those folders.
On the iPhone I get an Error Initialization failed message. No messages on the other devices.
Serviio 2.1
OSX 10.13.6
log attached
Any help would be gratefully received!
Thanks