Fix travis

.travis.yml

@@ -383,7 +383,7 @@ after_failure:
   # Dolibarr log file
   if [ "$DEBUG" = true ]; then
     echo Output 50 latest lines of dolibarr.log"
-	tail -n 50 documents/dolibarr.log
+    tail -n 50 documents/dolibarr.log
     # MariaDB log file
     sudo tail -n 50 /var/log/mysql/error.log
     # TODO: PostgreSQL log file