Reference datatype causes failure in Tile Excel Exporter

[jacobtylerwalls]

Bulk Data Manager:

1. Tile Excel Exporter > select scheme graph
2. Start

[2024-11-12 08:14:08,161: ERROR/ForkPoolWorker-8] sequence item 0: expected str instance, dict found
Traceback (most recent call last):
  File "/Users/jwalls/prj/arches/arches/app/tasks.py", line 319, in export_excel_data
    import_module.run_export_task(
  File "/Users/jwalls/prj/arches/arches/app/etl_modules/tile_excel_exporter.py", line 92, in run_export_task
    datatype_instance.transform_export_values(
  File "/Users/jwalls/prj/arches-references/arches_references/datatypes/datatypes.py", line 101, in transform_export_values
    return ",".join(value)
           ^^^^^^^^^^^^^^^
TypeError: sequence item 0: expected str instance, dict found

---

I used this diff to get a richer traceback:

diff --git a/arches/app/tasks.py b/arches/app/tasks.py
index 270d1e1939..887bfffb04 100644
--- a/arches/app/tasks.py
+++ b/arches/app/tasks.py
@@ -328,7 +328,7 @@ def export_excel_data(
         load_event = models.LoadEvent.objects.get(loadid=load_id)
         status = _("Completed") if load_event.status == "indexed" else _("Failed")
     except Exception as e:
-        logger.error(e)
+        logger.error(e, exc_info=True)
         load_event = models.LoadEvent.objects.get(loadid=load_id)
         load_event.status = "failed"
         load_event.save()