#1314 mod_smacks: cache size must be greater than zero
> What steps will reproduce the problem?
1. start an xmpp session with a mobile client
2. put the client application to background (socket will be closed by OS)
3. bring application back to foreground (SM resume will be sent)
> What is the expected output?
> What do you see instead?
With debug enabled: https://h.tenak.net/dejisitugo.txt
> What version of the product are you using? On what operating system?
Debian stretch package for prosody-0.11
> Please provide any additional information below.
The lines from logs before the traceback: https://prosody.im/pastebin/b877542e-6cd3-4113-b08e-226cd9739283