diff --git a/endpoints/v2/manifest.py b/endpoints/v2/manifest.py
index 941f73567..4c56e8701 100644
--- a/endpoints/v2/manifest.py
+++ b/endpoints/v2/manifest.py
@@ -100,6 +100,7 @@ def write_manifest_by_tagname(namespace_name, repo_name, manifest_ref):
   try:
     manifest = DockerSchema1Manifest(request.data)
   except ManifestException as me:
+    logger.exception("failed to parse manifest when writing by tagname")
     raise ManifestInvalid(detail={'message': 'failed to parse manifest: %s' % me.message})
 
   if manifest.tag != manifest_ref:
@@ -118,6 +119,7 @@ def write_manifest_by_digest(namespace_name, repo_name, manifest_ref):
   try:
     manifest = DockerSchema1Manifest(request.data)
   except ManifestException as me:
+    logger.exception("failed to parse manifest when writing by digest")
     raise ManifestInvalid(detail={'message': 'failed to parse manifest: %s' % me.message})
 
   if manifest.digest != manifest_ref:
@@ -143,6 +145,7 @@ def _write_manifest(namespace_name, repo_name, manifest):
     raise NameInvalid()
 
   if not manifest.layers:
+    logger.info("manifest provided with no layers")
     raise ManifestInvalid(detail={'message': 'manifest does not reference any layers'})
 
   # Ensure all the blobs in the manifest exist.
@@ -172,6 +175,7 @@ def _write_manifest(namespace_name, repo_name, manifest):
         rewritten_image.parent_image_id,
       )
   except ManifestException as me:
+    logger.exception("exception when rewriting v1 metadata")
     raise ManifestInvalid(detail={'message': 'failed synthesizing v1 metadata: %s' % me.message})
 
   # Store the manifest pointing to the tag.