X-Git-Url: https://git.openstreetmap.org/nominatim.git/blobdiff_plain/6f6910101e495cb7dbda2a295645f6174fce6a54..e42349c963bfc1ef5f2db880804d7cbeff5a564f:/nominatim/config.py

diff --git a/nominatim/config.py b/nominatim/config.py
index d1df17b7..a8436440 100644
--- a/nominatim/config.py
+++ b/nominatim/config.py
@@ -30,7 +30,7 @@ class Configuration:
         self.project_dir = project_dir
         self.config_dir = config_dir
         self._config = dotenv_values(str((config_dir / 'env.defaults').resolve()))
-        if project_dir is not None:
+        if project_dir is not None and (project_dir / '.env').is_file():
             self._config.update(dotenv_values(str((project_dir / '.env').resolve())))
 
         # Add defaults for variables that are left empty to set the default.
@@ -39,7 +39,7 @@ class Configuration:
             self._config['NOMINATIM_ADDRESS_LEVEL_CONFIG'] = \
                 str(config_dir / 'address-levels.json')
 
-        class _LibDirs: # pylint: disable=too-few-public-methods
+        class _LibDirs:
             pass
 
         self.lib_dir = _LibDirs()
@@ -68,9 +68,9 @@ class Configuration:
         """
         try:
             return int(self.__getattr__(name))
-        except ValueError:
+        except ValueError as exp:
             LOG.fatal("Invalid setting NOMINATIM_%s. Needs to be a number.", name)
-            raise UsageError("Configuration error.")
+            raise UsageError("Configuration error.") from exp
 
 
     def get_libpq_dsn(self):