I updated advanced fluid handling to 2.0.6 (valves are now based on internal valve prototype) and it seems this mod needs to be adapted:
(when I disable Advanced Fluid Handling For PyMods the game will start)
Failed to load mods: pypostprocessing/lib/metas/item.lua:26: Item 80-overflow-valve does not exist
stack traceback:
[C]: in function 'error'
pypostprocessing/lib/metas/item.lua:26: in function 'ITEM'
pypostprocessing/prototypes/next-upgrades.lua:35: in function 'check_for_valid_minable_properties'
pypostprocessing/prototypes/next-upgrades.lua:52: in function 'can_be_upgraded'
pypostprocessing/prototypes/next-upgrades.lua:59: in main chunk
[C]: in function 'require'
pypostprocessing/data-updates.lua:1: in main chunk