The mod Item Network (0.8.1) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event item-network::on_nth_tick(1)
item-network/src/GlobalState.lua:124: attempt to index field 'timers' (a nil value)
stack traceback:
item-network/src/GlobalState.lua:124: in function 'start_timer'
item-network/src/NetworkChest.lua:778: in function <item-network/src/NetworkChest.lua:777>

Apparently its not a bug with the update itself but with my save since going back to 0.8.0 also throws the same error

Sorry about that. Should be fixed with 0.8.2.

Ok now I have no idea why rolling back the version also thrown the error... Updated to 0.8.2 and it loaded fine.

Apparently the timer isn't working at all... none of the IN chests or tanks are providing/requesting...

Version 0.8.3 fixes another bug I found with Network Tanks not updating. Hopefully that's the last of them.

So far everything is working fine.

Found another one:
The mod Item Network (0.8.3) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event item-network::on_nth_tick(1)
item-network/src/Timer.lua:12: assertion failed!
stack traceback:
[C]: in function 'assert'
item-network/src/Timer.lua:12: in function 'start'
item-network/src/GlobalState.lua:129: in function 'start_timer'
item-network/src/NetworkChest.lua:732: in function <item-network/src/NetworkChest.lua:727>
(...tail calls...)
item-network/src/GlobalState.lua:611: in function 'update_queue'
item-network/src/NetworkChest.lua:724: in function 'update_queue'
item-network/src/NetworkChest.lua:782: in function <item-network/src/NetworkChest.lua:778>

Happens when deconstructing blue Requester chest with Deconstruction planner

I'm having the same problem as the above. I'm using Space Exploration, Blueprint Sandbox and Factorissimo2 (i.e. several surfaces)

At some point in time I disabled the Item Network for Logistics Chest because items were being transported from my factory to the sandbox which means I was losing some production to a temporary factory setup, but after I cleaned my sandbox, whenever I enable it again my game crash with the same error.

Mod version is in 0.8.3

I just released a fix in 0.8.4. Please let me know if that doesn't work.

Tested here and the error didn't occur, will keep testing and I'll provide further feedback if I find something.

Thanks for your patience with these bugs. 0.8.1 was a rocky release and I'll make sure to do more testing before releasing new features to prevent situations like this in the future.