Just updated Factorio to the new 1.1.19 as well as Mining Drones to 1.1.6 (from Factorio 1.1.18 / Mining drones 1.1.5) and while updating mod Krastorio to 1.0.23 from 1.0.22 Now I am receiving a non-recoverable error.

The mod Mining Drones (1.1.6) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Mining_Drones::on_script_path_request_finished (ID 114)
Mining_Drones/script/mining_depot.lua:969: HUHEKR?
stack traceback:
[C]: in function 'error'
Mining_Drones/script/mining_depot.lua:969: in function 'add_mining_target'
Mining_Drones/script/mining_depot.lua:897: in function 'handle_path_request_finished'
Mining_Drones/script/mining_depot.lua:1111: in function 'handler'
core/lualib/event_handler.lua:47: in function <core/lualib/event_handler.lua:45>

Any suggestions to get this to work again?

I have the same problem. What can i do?

Installing this on our 1.1 server makes the server save corrupt,... had to revert to older save... :(

Only work around this I found was to roll back your Factorio update to 1.0 and roll back your mods to match the saves, as there appears to be no forward/backward compatibility for older saves, as you can start a new game a fresh and the mods work perfectly all while being 100% up to date.

Can you provide a save game?

Sure Klonan, I've uploaded it to Mediafire see:
https://www.mediafire.com/file/66ewkdx5haypj25/Krastorio2_save3.zip/file
it's a 70mb save file.