diff --git a/.gitignore b/.gitignore
index b11afb7abb..5e6be3f819 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,6 +14,7 @@ venv*
 v3nv/
 tmp/
 /src/toil/test/cwl/spec*
+/src/toil/test/wdl/wdl-conformance-tests
 /cwltool_deps/
 /docs/generated_rst/
 /docker/Dockerfile
diff --git a/docs/conf.py b/docs/conf.py
index a0b402ebf7..a26d25a07a 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -160,7 +160,8 @@ def setup(app):
 autoapi_dirs = ["../src/toil"]
 autodoc_typehints = "description"
 autoapi_keep_files = True
-autoapi_ignore = ["*.pyi", "*/test/cwl/spec*/*.py", "*/fake_mpi_run.py", "*/tutorial_*.py", "*/example_*.py", "*/mkFile.py", "*/debugWorkflow.py"]
+autoapi_ignore = ["*.pyi", "*/test/cwl/spec*/*.py", "*/fake_mpi_run.py", "*/tutorial_*.py", "*/example_*.py", "*/mkFile.py", "*/debugWorkflow.py",
+                  "*/test/wdl/wdl-conformance-tests/*"]
 autoapi_options = [
     "members",
     "undoc-members",
diff --git a/src/toil/job.py b/src/toil/job.py
index 91ca5757d5..efa173db2a 100644
--- a/src/toil/job.py
+++ b/src/toil/job.py
@@ -40,21 +40,18 @@
     NamedTuple,
     Optional,
     Sequence,
-    Set,
     Tuple,
     TypeVar,
     Union,
     cast,
-    overload, TypedDict, Literal,
+    overload,
+    TypedDict,
+    Literal,
 )
 from urllib.error import HTTPError
 from urllib.parse import urlsplit, unquote, urljoin
 
-from configargparse import ArgParser
-
 from toil import memoize
-from toil.bus import Names
-from toil.lib.compatibility import deprecated
 
 import dill
 from configargparse import ArgParser
@@ -81,11 +78,13 @@
     from optparse import OptionParser
 
     from toil.batchSystems.abstractBatchSystem import (
-        BatchJobExitReason,
-        InsufficientSystemResources,
+        BatchJobExitReason
     )
     from toil.fileStores.abstractFileStore import AbstractFileStore
-    from toil.jobStores.abstractJobStore import AbstractJobStore, UnimplementedURLException
+    from toil.jobStores.abstractJobStore import (
+        AbstractJobStore,
+        UnimplementedURLException,
+    )
 
 logger = logging.getLogger(__name__)
 
@@ -3793,7 +3792,7 @@ class FileMetadata(NamedTuple):
 def potential_absolute_uris(
     uri: str,
     path: list[str],
-    importer: WDL.Tree.Document | None = None,
+    importer: str | None = None,
     execution_dir: str | None = None,
 ) -> Iterator[str]:
     """
@@ -3834,7 +3833,7 @@ def potential_absolute_uris(
 
     if importer is not None:
         # Add the place the imported file came form, to search first.
-        full_path_list.append(Toil.normalize_uri(importer.pos.abspath))
+        full_path_list.append(Toil.normalize_uri(importer))
 
     # Then the current directory. We need to make sure to include a filename component here or it will treat the current directory with no trailing / as a document and relative paths will look 1 level up.
     # When importing on a worker, the cwd will be a tmpdir and will result in FileNotFoundError after os.path.abspath, so override with the execution dir
diff --git a/src/toil/wdl/wdltoil.py b/src/toil/wdl/wdltoil.py
index fcf2d4dacb..abd1c0ce45 100755
--- a/src/toil/wdl/wdltoil.py
+++ b/src/toil/wdl/wdltoil.py
@@ -506,7 +506,7 @@ async def toil_read_source(
     # We track our own failures for debugging
     tried = []
 
-    for candidate_uri in potential_absolute_uris(uri, path, importer):
+    for candidate_uri in potential_absolute_uris(uri, path, importer=importer.pos.abspath if importer else None):
         # For each place to try in order
         destination_buffer = io.BytesIO()
         logger.debug("Fetching %s", candidate_uri)