Update .gitignore
diff --git a/.gitignore b/.gitignore
index fbaae1c..bf8f01e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,6 +5,7 @@
 cache/
 build/
 target/
+*.err
 *.log
 *_files/
 *.bak
@@ -12,3 +13,4 @@
 .gitlab-ci-local/
 \#*
 models/
+dnb.index/