Noticed your thrusters bottom right (oxidizer) connection was located inside the thruster itself instead of external. To fix it, change line 966 (version current as of 20 Dec '24) of data.lua from:
table.insert(data.raw['thruster']['thruster'].oxidizer_fluid_box.pipe_connections, {flow_direction='input-output', direction=defines.direction.west, position={1.5, 2}})
to
table.insert(data.raw['thruster']['thruster'].oxidizer_fluid_box.pipe_connections, {flow_direction='input-output', direction=defines.direction.east, position={1.5, 2}})