Modpack Version

1.23.1

Describe your issue.

Trying to insert 16 bottles into a 1x1 internal volume vacuum pressure chamber (pneumaticraft). Items are stuck in the pressure chamber interface with message "Not enough pressure". Pressure is at -0.99. I have added 16 volume upgrades to the vacuum pump but it doesn't help.

I guess this is similar to EnigmaticaModpacks/Enigmatica6#4630 but the suggested volume upgrades did not resolve it. Unless I have to max out volume upgrades up to 25?

Playing E9 Expert if it matters,

Crash Report

No response

Latest Log

No response

Have you modified the modpack?

No

User Modifications

No response

Did the issue happen in singleplayer or on a server?

Singleplayer

Discord Username

No response

The Volume Upgrades are supposed to go in the Pressure Chamber, not in the Vacuum Pump. This is also not a bug, it's intended mechanics of the mod.

@SeooY thanks! I didn't realize the pressure chamber can also have upgrades. A single volume upgrade did the trick!