---
title: "Error when opening a Taxonomy list in Arena"
url: "https://openforis.support/questions/4595/error-when-opening-a-taxonomy-list-in-arena"
tags: ["arena"]
status: "answered"
score: 0
answer_count: 1
asked: "2026-10-30T12:48:05.638385"
last_activity: "2026-10-30T14:51:41.599627"
source: "Open Foris Support - Q&A Forum"
license: "Copyright Open Foris, 2026. Some rights reserved under creative commons license."
---

# Error when opening a Taxonomy list in Arena

Asked by osgarcia on 2026-10-30

Hi OF Team,

I'm getting the following error when opening a survey and navigating to **Taxonomies**. It occurs when I try to open a taxonomy list:

Something went wrong:

```
Error: Minified React error #31; visit https://reactjs.org/docs/error-decoder.html?invariant=31&args[]=object%20with%20keys%20%7Bresult%2C%20sharedFormula%7D for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
    at vo (https://www.openforis-arena.org/bundle-0e4f2d9d20b9d35ac197.js:1:3777790)
    at e (https://www.openforis-arena.org/bundle-0e4f2d9d20b9d35ac197.js:1:3782785)
    at bs (https://www.openforis-arena.org/bundle-0e4f2d9d20b9d35ac197.js:1:3800784)
    at El (https://www.openforis-arena.org/bundle-0e4f2d9d20b9d35ac197.js:1:3849206)
    at yc (https://www.openforis-arena.org/bundle-0e4f2d9d20b9d35ac197.js:1:3836631)
    at _c (https://www.openforis-arena.org/bundle-0e4f2d9d20b9d35ac197.js:1:3836559)
    at gc (https://www.openforis-arena.org/bundle-0e4f2d9d20b9d35ac197.js:1:3836422)
    at oc (https://www.openforis-arena.org/bundle-0e4f2d9d20b9d35ac197.js:1:3833257)
    at ac (https://www.openforis-arena.org/bundle-0e4f2d9d20b9d35ac197.js:1:3831812)
    at x (https://www.openforis-arena.org/bundle-0e4f2d9d20b9d35ac197.js:1:6678992)
```

Thanks
Oscar


## Answer (score 0, by Stefano (OF) on 2026-10-30)

Link: https://openforis.support/questions/4595/error-when-opening-a-taxonomy-list-in-arena/4596

Hi Oscar,  
Thanks for reporting this. We've found the cause: the problem comes from some cells in the Excel file used to import the taxonomy, such as cells containing formulas, which weren't imported correctly.  
We've already fixed it, and we'll release a new version of Arena later today. Your existing taxonomy will be corrected automatically with the update, so you won't need to import it again or change your file.  
Once the new version is out, please reload the page and open the taxonomy again. If you still see the error, let us know here.  
Thanks for your patience,  
The Open Foris Arena team