I created a parametrized blueprint with a constant combinator connected to a digitization chest with the logistics option and when I placed it without putting anything in the parameter value for item type the game crashed.

The mod Quantum Fabrication (2.10.2) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event quantum-fabricator::on_nth_tick(10)
quantum-fabricator/scripts/qs_utils.lua:171: attempt to index field '?' (a nil value)
stack traceback:
quantum-fabricator/scripts/qs_utils.lua:171: in function 'count_in_storage'
quantum-fabricator/scripts/qs_utils.lua:118: in function 'pull_from_storage'
quantum-fabricator/scripts/tracking_utils.lua:534: in function 'update_entity'
quantum-fabricator/scripts/tracking_utils.lua:148: in function 'callback'
flib/table.lua:294: in function 'for_n_of'
quantum-fabricator/scripts/tracking_utils.lua:147: in function <quantum-fabricator/scripts/tracking_utils.lua:144>

This is the blueprint used:

0eNqFUt1OwjAUfpdz3ZF22RCaeOGlz0AI6bYKTdZ2dh2KpO/uORsgomh2c/r19PvLjlC1g+6CcRHkEUztXQ9ydYTebJ1qCXPKapDQmK2J5kOHrN7pPkJiYFyj30GKxH7ZJ6aoXMxqbyvjVPTh6k2e1gy0i0ipJ8HxcNi4wVY6ICn7i4hB53t86x0pIl/GZyWDAw5i/jArUagxQdfThsgZscTg202ld2pvkALf9dNC/31GL+dgDF5MG3W4RU/OOhVwwPuMo6PXQbWYAHHng8UuSNTSDjmW8DgCAxUtOOdpjV+i6m6S5+xe5T9S34SmTt8wNtldCSZYzsQasYvPKUc8dMRuGrgoPUdt8YTQnVRYvmsu0v9HHYOdhE7B2HmQQPm/xJ/s2Aq5N+RDXv2TDPZoe5Qt5/myWC7LRcFzXixS+gSx0+dj

I can't replicate it on a clean save with just my mod.

Please upload a save somewhere.

I just removed all other mods besides Quantum Fabrication and tried it on a new save and the error occurs again.
My only non-default settings are enabled 'Enable semi-cheat digitizing chests' and disabled 'Enable Space Transfer'.

Oh yeah, I have to enable this feature. Forgetting my own mods.

Fixed.