diff --git a/.gitignore b/.gitignore
index 4648488..99513ea 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,5 +5,5 @@ __pycache__
 result*.json
 groups.json
 diffable_dates.txt
-parsed
+parsed/
 parser.json
\ No newline at end of file
diff --git a/main.py b/main.py
index 8ad46eb..d4341d0 100644
--- a/main.py
+++ b/main.py
@@ -354,7 +354,7 @@ def main():
             ),
             body=json.dumps({
                 "type": "session_end",
-                "err": err,
+                "err": str(err) if err else None,
                 "duration": t.step(),
                 "session": sess
                 }, ensure_ascii=False).encode('utf-8')
diff --git a/requirements.txt b/requirements.txt
index 2b34fa0..ac55965 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,6 @@
 openpyxl
 xlrd
 beautifulsoup4
-requests
\ No newline at end of file
+requests
+pika
+python-dotenv
\ No newline at end of file