diff --git a/sapl/audiencia/forms.py b/sapl/audiencia/forms.py
index adab88db6..d2c7dd45b 100755
--- a/sapl/audiencia/forms.py
+++ b/sapl/audiencia/forms.py
@@ -115,7 +115,7 @@ class AudienciaForm(FileFieldCheckMixin, forms.ModelForm):
                     numero=materia,
                     ano=ano_materia,
                     tipo=tipo_materia)
-            except ObjectDoesNotExist:
+            except (ObjectDoesNotExist, ValueError):
                 msg = _('A matéria %s nº %s/%s não existe no cadastro'
                         ' de matérias legislativas.' % (tipo_materia, materia, ano_materia))
                 self.logger.warning(
diff --git a/sapl/relatorios/forms.py b/sapl/relatorios/forms.py
index 23145f899..f659c254c 100644
--- a/sapl/relatorios/forms.py
+++ b/sapl/relatorios/forms.py
@@ -633,6 +633,8 @@ class RelatorioMateriasPorAutorFilterSet(django_filters.FilterSet):
     @property
     def qs(self):
         parent = super().qs
+        if not self.data.get('autoria__autor'):
+            return parent.none()
         return parent.distinct().order_by('-ano', '-numero', 'tipo', 'autoria__autor', '-autoria__primeiro_autor')
 
     class Meta(FilterOverridesMetaMixin):
@@ -744,7 +746,9 @@ class RelatorioNormasPorAutorFilterSet(django_filters.FilterSet):
     @property
     def qs(self):
         parent = super().qs
-        return parent.distinct().filter(autorianorma__primeiro_autor=True) \
+        if not self.data.get('autorianorma__autor'):
+            return parent.none()
+        return parent.distinct() \
             .order_by('autorianorma__autor', '-autorianorma__primeiro_autor', 'tipo', '-ano', '-numero')
 
     class Meta(FilterOverridesMetaMixin):
diff --git a/sapl/relatorios/views.py b/sapl/relatorios/views.py
index 1fd2c5a0c..abb1866b8 100755
--- a/sapl/relatorios/views.py
+++ b/sapl/relatorios/views.py
@@ -2660,7 +2660,6 @@ class RelatorioMateriasPorAutorView(RelatorioMixin, FilterView):
             return context
 
         qs = context['object_list']
-        context['materias_resultado'] = list(collections.OrderedDict.fromkeys(qs))
         context['qtdes'] = num_materias_por_tipo(qs)
 
         qr = self.request.GET.copy()
@@ -2675,9 +2674,9 @@ class RelatorioMateriasPorAutorView(RelatorioMixin, FilterView):
             context['tipo'] = ''
         if self.request.GET['autoria__autor']:
             autor = int(self.request.GET['autoria__autor'])
-            context['autor'] = (str(Autor.objects.get(id=autor)))
+            context['autor'] = Autor.objects.get(id=autor)
         else:
-            context['autor'] = ''
+            context['autor'] = None
         context['periodo'] = (
                 self.request.GET['data_apresentacao_0'] +
                 ' - ' + self.request.GET['data_apresentacao_1'])
@@ -2921,9 +2920,9 @@ class RelatorioNormasPorAutorView(RelatorioMixin, FilterView):
 
         if self.request.GET['autorianorma__autor']:
             autor = int(self.request.GET['autorianorma__autor'])
-            context['autor'] = (str(Autor.objects.get(id=autor)))
+            context['autor'] = Autor.objects.get(id=autor)
         else:
-            context['autor'] = ''
+            context['autor'] = None
         context['periodo'] = (
                 self.request.GET['data_0'] +
                 ' - ' + self.request.GET['data_1'])
diff --git a/sapl/templates/relatorios/RelatorioMateriasPorAutor_filter.html b/sapl/templates/relatorios/RelatorioMateriasPorAutor_filter.html
index 5acb303c1..dcd7287e0 100644
--- a/sapl/templates/relatorios/RelatorioMateriasPorAutor_filter.html
+++ b/sapl/templates/relatorios/RelatorioMateriasPorAutor_filter.html
@@ -17,7 +17,7 @@
     &emsp;Tipo de matéria: {{ tipo }}<br />
     &emsp;Data de apresentação: {{ periodo }}<br /><br /><br/>
     
-    {% if materias_resultado %}
+    {% if object_list %}
       <table class="table table-bordered table-hover">
         <thead class="thead-default" >
           <tr class="active">
@@ -43,10 +43,10 @@
           <tr class="active">
             <th width="10%">Matéria</th>
             <th>Ementa</th>
-            <th width="20%">Autor(es)</th>
+            <th width="20%">Coautor(es)</th>
           </tr>
         </thead>
-        {% for materia in materias_resultado %}
+        {% for materia in object_list %}
           <tbody>
             <tr>
               <td>
@@ -56,11 +56,9 @@
               </td>
               <td>{% autoescape off %}{{materia.ementa}}<br>{{materia.observacao}}{% endautoescape %}</td>
               <td>
-                {% for autor in materia.autoria_set.all %}
-                  {% if not autor.primeiro_autor %}
-                    {{ autor.autor }}<br />
-                  {% else %}
-                    <u><b><i>{{ autor.autor }}</i></b></u><br />
+                {% for autoria in materia.autoria_set.all %}
+                  {% if autoria.autor != autor %}
+                    {{ autoria.autor }}<br />
                   {% endif %}
                 {% endfor %}
               </td>
diff --git a/sapl/templates/relatorios/RelatorioNormasPorAutor_filter.html b/sapl/templates/relatorios/RelatorioNormasPorAutor_filter.html
index c3f045301..51c987c34 100644
--- a/sapl/templates/relatorios/RelatorioNormasPorAutor_filter.html
+++ b/sapl/templates/relatorios/RelatorioNormasPorAutor_filter.html
@@ -54,13 +54,11 @@
                     </a></td>
                     <td>{% autoescape off %}{{norma.ementa}}<br>{{norma.observacao}}{% endautoescape %}</td>
                     <td>
-                        {% if norma.autorianorma_set.first != norma.autorianorma_set.last %}
-                          {% for autor in norma.autorianorma_set.all %}
-                            {% if not autor.primeiro_autor %}
-                              {{ autor.autor }}<br />
+                          {% for autoria in norma.autorianorma_set.all %}
+                            {% if autoria.autor != autor %}
+                              {{ autoria.autor }}<br />
                             {% endif %}
                           {% endfor %}
-                        {% endif %}
                     </td>
                   </tr>
               </tbody>
diff --git a/sapl/templates/relatorios/blocos_sessao_plenaria/ocorrencias_da_sessao.html b/sapl/templates/relatorios/blocos_sessao_plenaria/ocorrencias_da_sessao.html
index f37c899be..fc2016b83 100644
--- a/sapl/templates/relatorios/blocos_sessao_plenaria/ocorrencias_da_sessao.html
+++ b/sapl/templates/relatorios/blocos_sessao_plenaria/ocorrencias_da_sessao.html
@@ -1,4 +1,4 @@
     <h2 class="gray-title">Ocorrências da Sessão</h2>
     {% for o in lst_ocorrencias%}
-            <p>{{o|striptags|safe}}</p>
+            <p>{{o.conteudo|striptags|safe}}</p>
     {% endfor %}
diff --git a/sapl/utils.py b/sapl/utils.py
index 1480150e9..d9f2fc29b 100644
--- a/sapl/utils.py
+++ b/sapl/utils.py
@@ -1404,8 +1404,9 @@ class MultiFormatOutputMixin:
         return {fmt: fields for fmt in self.formats_impl}
 
     def render_to_response(self, context, **response_kwargs):
-        format_result = getattr(self.request, self.request.method).get(
-            'format', None)
+        # HEAD shares query params with GET; Django has no request.HEAD attribute.
+        _method = 'GET' if self.request.method == 'HEAD' else self.request.method
+        format_result = getattr(self.request, _method).get('format', None)
 
         if format_result:
             if format_result not in self.formats_impl: