TEA is not running for to calculate AOC or MSP

---
name: Bug report
about: Issue with TEA, so can't run it
title: 'TEA is not running for to calculate AOC or MSP'
labels: ''
assignees: ''

---

**Describe the bug**
When trying to run a TEA on a system I have produced, I successfully obtained caplital cost data (DFC,FCI,ect) but when trying to run to get operating costs or minimum selling price then it gave the error
"AttributeError: 'TEA' object has no attribute '_FOC'. Did you mean: 'FOC'?"
As _FOC is not an input I have to include, then it appears to be an internal issue.

**To Reproduce**
A script or a text file that runs the code to reproduce the error.

**Expected behavior**
To produce a number for AOC or MSP.

**Actual behavior**

**Version**
-Python version 3.13.5

**Additional context**
I also tried to install biorefineries, so that I could test it, but it said it doesn't install on python versions 3.9-3.13 and mine is later than that