# Modeling App Errors

## **Types of Errors**

* **UE**=User fixable or possible user error
* **KE**=KBase error

{% hint style="info" %}
Use your Browser's search tool to paste in your error message to locate your error message, information about the error and next steps. 
{% endhint %}

You can always submit a ticket for help, questions, or followup to the [KBase Help Board](https://kbase-jira.atlassian.net/jira/your-work). 

## [**Bulk Download Modeling Objects**](https://narrative.kbase.us/#catalog/apps/fba_tools/bulk_download_modeling_objects/release)

#### `Must provide one and only one of workspace name` 

UE: No modeling objects were found the the user’s narrative. 

*Add some objects and try resubmitting the job.*

#### `GLPK does not support ID's longer than 256 characters` 

KE: This option fails when this condition exists and the app needs maintenance.

*Nothing can be done at this time. KBase is working on a solution to this problem.* 

## [**View Flux Network**](https://narrative.kbase.us/#catalog/apps/fba_tools/view_flux_network/)

#### `Can't use an undefined value as an ARRAY reference` 

KE: The app is failing and needs maintenance. 

*Nothing can be done at this time. KBase is working on a solution to this problem.* 

#### `Authentication required for AbstractHandle but no authentication header was passed` 

KE: The app is failing and needs maintenance. 

*Nothing can be done at this time. KBase is working on a solution to this problem.* 

## [**Compare Models**](https://narrative.kbase.us/#catalog/apps/fba_tools/compare_models/)

#### `Must select at least two models to compare` 

UE: The app requires two or more models for the comparison. 

*Add at least one more model and and try resubmitting the job.*


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.kbase.us/troubleshooting/job-errors/modeling.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.