When running along with ultracube, I get the following crash when producing matter replication gel.

The mod Inventory Sensor (2.0.2) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Inventory Sensor::on_tick (ID 0)
Filter conflicts with filter in slot 2.
stack traceback:
[C]: in function 'set_slot'
Inventory Sensor/control.lua:499: in function 'UpdateSensor'
Inventory Sensor/control.lua:204: in function <Inventory Sensor/control.lua:182>

I get it too.

Error while running event Inventory Sensor::on_tick (ID 0)
所选物品与索引 2 处的筛选器冲突。
stack traceback:
[C]: in function 'set_slot'
Inventory Sensor/control.lua:499: in function 'UpdateSensor'
Inventory Sensor/control.lua:204: in function <Inventory Sensor/control.lua:182>

thanks. What is ultracube? I have an idea what the crash is. Do you happen to look at an entity that has multiple inventories (e.g. fuel for a burner and a another grid for items) and do those happen to have the same items in them?

Its another mod. The entity I was working with when I observed the crash had fuel as well as inputs and outputs, yes. The good news is that with the latest updates the crash seems to have gone away. Thanks

great. The filter conflict was always there, so it could have been triggered by any mod. Thanks for testing and confirming that it is fixed.

great. The filter conflict was always there, so it could have been triggered by any mod. Thanks for testing and confirming that it is fixed.

No - IMHO neither it needs other mods nor it's fixed. Any entity with more than 1 inventory can trigger it.
I just took an empty requester chest, connected an inventory sensor with it and put 1 copper plate into the main inventory. Up to here everything is fine and the sensor shows the copper plate. Then I tried to add another copper plate to the trash inventory - and boom 😏 - the error occurs. See here https://imgur.com/a/hIJJnIv

As far as I have been able to test this so far this PR https://github.com/hgschmie/factorio-0ptera-Inventory-Sensor/pull/5 fixes it - so it would be fine, if you could accept it.

will look at it. Thank you.

This should be fixed with 2.0.5