add default renderer

backend/settings.py

@@ -183,26 +183,10 @@ STATIC_URL = 'static/'
 
 DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
 
-# LOGGING
-
-LOGGING = {
-    'version': 1,
-    'disable_existing_loggers': False,
-    'handlers': {
-        'console': {
-            'class': 'logging.StreamHandler',
-            'stream': sys.stdout,
-        },
-    },
-    'root': {
-        'handlers': ['console'],
-        'level': 'INFO',
-    },
-    'loggers': {
-        'django': {
-            'handlers': ['console'],
-            'level': 'INFO',
-            'propagate': True,
-        },
-    },
+# RENDERER
+
+REST_FRAMEWORK = {
+    'DEFAULT_RENDERER_CLASSES': [
+        'rest_framework.renderers.JSONRenderer',
+    ]
 }