task_trace was a little mixed up in the errors.

crc/__init__.py

@@ -160,9 +160,13 @@ def validate_all(study_id, category=None, spec_id=None):
                 print(f"Skipping {spec.id} in category {spec.category.display_name}, it is disabled for this study.")
             else:
                 print(f"API Error {e.code}, validate workflow {spec.id} in Category {spec.category.display_name}. {e.message}")
+                for t in e.task_trace:
+                    print(f"---> {t}")
                 continue
         except WorkflowTaskExecException as e:
             print(f"Workflow Error, {e}, in Task {e.task.name} validate workflow {spec.id} in Category {spec.category.display_name}")
+            for t in e.task_trace:
+                print(f"---> {t}")
             continue
         except Exception as e:
             print(f"Unexpected Error ({e.__class__.__name__}), {e} validate workflow {spec.id} in Category {spec.category.display_name}")

crc/api/common.py

@@ -15,9 +15,11 @@ class ApiError(Exception):
     def __init__(self, code, message, status_code=400,
                  file_name="", task_id="", task_name="", tag="",
                  task_data=None, error_type="", error_line="", line_number=0, offset=0,
-                 task_trace=[]):
+                 task_trace=None):
         if task_data is None:
             task_data = {}
+        if task_trace is None:
+            task_trace = {}
         self.status_code = status_code
         self.code = code  # a short consistent string describing the error.
         self.message = message  # A detailed message that provides more information.
@@ -30,7 +32,7 @@ class ApiError(Exception):
         self.offset = offset
         self.error_type = error_type
         self.error_line = error_line
-        self.task_stack = task_trace
+        self.trask_trace = task_trace
 
         try:
             user = g.user.uid