ES returning dates in iso format so add conversion to avoid type error

corehq/apps/builds/utils.py

@@ -1,4 +1,7 @@
 import re
+from datetime import datetime
+
+from dimagi.utils.parsing import ISO_DATETIME_FORMAT
 
 from .models import CommCareBuild, CommCareBuildConfig
 
@@ -54,6 +57,9 @@ def get_latest_version_at_time(target_time):
     if not target_time:
         return config.get_default().version
 
+    if isinstance(target_time, str):
+        target_time = datetime.strptime(target_time, ISO_DATETIME_FORMAT)
+
     # Iterate through menu items in reverse (newest to oldest)
     for item in reversed(config.menu):
         if item.superuser_only: