On Factorio 2.0 server crashes randomly after using the planner

[SamueleLorefice]

Problem Description

Can't sort out exactly what triggers the crash, but after using it, few minutes later the server will crash with

Please report this error to the mod author.

Error while running event factoryplanner::on_nth_tick(893801)
__factoryplanner__/util/context.lua:109: attempt to index local 'object' (a nil value)
stack traceback:
    __factoryplanner__/util/context.lua:109: in function 'remove'
    __factoryplanner__/ui/main/factory_list.lua:7: in function 'handler'
    __factoryplanner__/util/nth_tick.lua:10: in function <__factoryplanner__/util/nth_tick.lua:7>```

Reproduction

No response

[ClaudeMetz]

Hm that's a tricky one without a reproduction. Maybe it's multiplayer latency related :/ I'll try a fix.