diff --git a/aprendizations/learnapp.py b/aprendizations/learnapp.py
index 23c0aef..bb565c7 100644
--- a/aprendizations/learnapp.py
+++ b/aprendizations/learnapp.py
@@ -373,12 +373,12 @@ class LearnApp():
 
         logger.info('Checking database "%s":', database)
         if not exists(database):
-            raise LearnException('Database does not exist. '
-                                 'Use "initdb-aprendizations" to create')
+            msg = 'Database does not exist.'
+            logger.error(msg)
+            raise LearnException(msg)
 
         self._engine = create_engine(f'sqlite:///{database}', future=True)
 
-
         try:
             query_students = select(func.count(Student.id))
             query_topics = select(func.count(Topic.id))
diff --git a/aprendizations/main.py b/aprendizations/main.py
index d97527d..fe9c1e1 100644
--- a/aprendizations/main.py
+++ b/aprendizations/main.py
@@ -7,6 +7,7 @@ Setup configurations and then runs the application.
 
 # python standard library
 import argparse
+import logging
 import logging.config
 from os import environ, path
 import ssl
@@ -14,10 +15,10 @@ import sys
 from typing import Any, Dict
 
 # this project
-from aprendizations.learnapp import LearnApp, DatabaseUnusableError, LearnException
-from aprendizations.serve import run_webserver
-from aprendizations.tools import load_yaml
-from aprendizations import APP_NAME, APP_VERSION
+from .learnapp import LearnApp, DatabaseUnusableError, LearnException
+from .serve import run_webserver
+from .tools import load_yaml
+from . import APP_NAME, APP_VERSION
 
 
 # ----------------------------------------------------------------------------
@@ -115,7 +116,7 @@ def get_logger_config(debug: bool = False) -> Any:
             'level': level,
             'propagate': False,
             } for module in ['learnapp', 'models', 'factory', 'tools', 'serve',
-                             'questions', 'student']})
+                             'questions', 'student', 'main']})
 
     return load_yaml(config_file, default=default_config)
 
@@ -197,12 +198,10 @@ def main():
         sys.exit(1)
     except LearnException as exc:
         logging.critical('Failed to start backend')
-        # sys.exit(1)
-        raise
+        sys.exit(1)
     except Exception:
         logging.critical('Unknown error')
-        # sys.exit(1)
-        raise
+        sys.exit(1)
     else:
         logging.info('LearnApp started')
 
--
libgit2 0.21.2