diff --git a/django_mako_plus/router/resolver.py b/django_mako_plus/router/resolver.py
index 492af95d..c32e7ae8 100755
--- a/django_mako_plus/router/resolver.py
+++ b/django_mako_plus/router/resolver.py
@@ -193,7 +193,7 @@ def resolve(self, path):
                     match.kwargs.pop('dmp_app', None) or self.dmp.options['DEFAULT_APP'],
                     match.kwargs.pop('dmp_page', None) or self.dmp.options['DEFAULT_PAGE'],
                     match.kwargs.pop('dmp_function', None) or 'process_request',
-                    match.kwargs.pop('dmp_urlparams', '').strip(),
+                    (match.kwargs.pop('dmp_urlparams', None) or '').strip(),
                 )
                 if VERSION < (2, 2):
                     return ResolverMatch(
@@ -218,7 +218,7 @@ def resolve(self, path):
                 # this is a hack, but the resolver error page doesn't give other options.
                 # the sad face is to catch the dev's attention in Django's printout
                 msg = "◉︵◉ Pattern matched, but discovery failed: {}".format(vdne)
-                log.debug("%s %s", match.url_name, msg)
+                log.exception("%s %s", match.url_name, msg)
                 raise Resolver404({
                     # this is a bit convoluted, but it makes the PatternStub work with Django 1.x and 2.x
                     'tried': [[ PatternStub(match.url_name, msg, PatternStub(match.url_name, msg, None)) ]],