# R/qtl2 Maps Error

## Tags

* type: bug
* status: open
* priority: high
* assigned: alexm, zachs, fredm
* keywords: R/qtl2, R/qtl2 Maps, gn3, genetwork3, genenetwork 3

## Reproduce

* Go to https://genenetwork.org/
* In the "Get Any" field, enter "synap*" and press the "Enter" key
* In the search results, click on the "1435464_at" trait
* Expand the "Mapping Tools" accordion section
* Select the "R/qtl2" option
* Click "Compute"
* In the "Computing the Maps" page that results, click on "Display System Log"

### Observed

A traceback is observed, with an error of the following form:

```
⋮
FileNotFoundError: [Errno 2] No such file or directory: '/opt/gn/tmp/gn3-tmpdir/JL9PvKm3OyKk.txt'
```

### Expected

The mapping runs successfully and the results are presented in the form of a mapping chart/graph and a table of values.

### Debug Notes

The directory "/opt/gn/tmp/gn3-tmpdir/" exists, and is actually used by other mappings (i.e. The "R/qtl" and "Pair Scan" mappings) successfully.

This might imply a code issue: Perhaps
* a path is hardcoded, or
* the wrong path value is passed

The same error occurs on https://cd.genenetwork.org but does not seem to prevent CD from running the mapping to completion. Maybe something is missing on production — what, though?