fix: the web service waits for the PostgreSQL driver instead of failing at start.

debian-package/src/usr/sbin/vpn-router-user

@@ -29,8 +29,8 @@ import sys
 sys.path.insert(0, '/usr/lib/vpn-router')
 
 import ldap
-import psycopg
 
+import vpnrouter_auth
 import vpnrouter_users
 from vpnrouter_users import Failure
 
@@ -135,8 +135,8 @@ def main(argv):
         message, status = str(failure), failure.status
     except (ldap.LDAPError, OSError) as exc:
         message, status = f'the user directory failed: {exc}', 1
-    except psycopg.Error as exc:
-        message, status = f'the token database failed: {exc}', 1
+    except vpnrouter_auth.DatabaseError as exc:
+        message, status = str(exc), 1
     else:
         print(json.dumps(answer) if as_json else text_of(answer))
         return 0