diff --git a/packagedb/api.py b/packagedb/api.py
index b633b72d..3a2aa981 100644
--- a/packagedb/api.py
+++ b/packagedb/api.py
@@ -695,7 +695,10 @@ def get_resolved_purls(packages):
     for items in packages or []:
         purl = items.get('purl')
         vers = items.get('vers')
-        
+
+        if not purl:
+            continue
+
         try:
             parsed_purl = PackageURL.from_string(purl)
         except ValueError:
@@ -706,6 +709,10 @@ def get_resolved_purls(packages):
             unique_resolved_purls.add(purl)
             continue
 
+        if not vers:
+            unsupported_purls.add(purl)
+            continue
+
         if resolved:= resolve_versions(parsed_purl, vers):
             unique_resolved_purls.update(resolved)
         else:
@@ -720,6 +727,9 @@ def resolve_versions(parsed_purl, vers):
     Take version-less purl along with vers range and return
     list of all the purls satisfying the vers range.
     """
+    if not parsed_purl or not vers:
+        return
+
     try:
         version_range = VersionRange.from_string(vers)
     except ValueError: