diff --git a/sources/manager_environment.py b/sources/manager_environment.py
index 33bbee44..95e96347 100644
--- a/sources/manager_environment.py
+++ b/sources/manager_environment.py
@@ -44,7 +44,7 @@ class EnvironmentManager:
     LOCALE = getenv("INPUT_LOCALE", "en")
     UPDATED_DATE_FORMAT = getenv("INPUT_UPDATED_DATE_FORMAT", "%d/%m/%Y %H:%M:%S")
     IGNORED_REPOS = getenv("INPUT_IGNORED_REPOS", "").replace(" ", "").split(",")
-    SYMBOL_VERSION = int(getenv("INPUT_SYMBOL_VERSION"))
+    SYMBOL_VERSION = int(getenv("INPUT_SYMBOL_VERSION", 1))
 
     DEBUG_LOGGING = getenv("INPUT_DEBUG_LOGGING", "0").lower() in _TRUTHY
     DEBUG_RUN = getenv("DEBUG_RUN", "False").lower() in _TRUTHY
diff --git a/sources/yearly_commit_calculator.py b/sources/yearly_commit_calculator.py
index 5ce0c947..d2274deb 100644
--- a/sources/yearly_commit_calculator.py
+++ b/sources/yearly_commit_calculator.py
@@ -63,25 +63,26 @@ async def update_data_with_commit_stats(repo_details: Dict, yearly_data: Dict, d
     for branch in branch_data["data"]["repository"]["refs"]["nodes"]:
         commit_data = await DM.get_remote_graphql("repo_commit_list", owner=owner, name=repo_details["name"], branch=branch["name"], id=GHM.USER.node_id)
         for commit in commit_data["data"]["repository"]["ref"]["target"]["history"]["nodes"]:
-            date = search(r"\d+-\d+-\d+", commit["committedDate"]).group()
-            curr_year = datetime.fromisoformat(date).year
-            quarter = (datetime.fromisoformat(date).month - 1) // 3 + 1
+            if commit:
+                date = search(r"\d+-\d+-\d+", commit["committedDate"]).group()
+                curr_year = datetime.fromisoformat(date).year
+                quarter = (datetime.fromisoformat(date).month - 1) // 3 + 1
 
-            if repo_details["name"] not in date_data:
-                date_data[repo_details["name"]] = dict()
-            if branch["name"] not in date_data[repo_details["name"]]:
-                date_data[repo_details["name"]][branch["name"]] = dict()
-            date_data[repo_details["name"]][branch["name"]][commit["oid"]] = commit["committedDate"]
+                if repo_details["name"] not in date_data:
+                    date_data[repo_details["name"]] = dict()
+                if branch["name"] not in date_data[repo_details["name"]]:
+                    date_data[repo_details["name"]][branch["name"]] = dict()
+                date_data[repo_details["name"]][branch["name"]][commit["oid"]] = commit["committedDate"]
 
-            if repo_details["primaryLanguage"] is not None:
-                if curr_year not in yearly_data:
-                    yearly_data[curr_year] = dict()
-                if quarter not in yearly_data[curr_year]:
-                    yearly_data[curr_year][quarter] = dict()
-                if repo_details["primaryLanguage"]["name"] not in yearly_data[curr_year][quarter]:
-                    yearly_data[curr_year][quarter][repo_details["primaryLanguage"]["name"]] = {"add": 0, "del": 0}
-                yearly_data[curr_year][quarter][repo_details["primaryLanguage"]["name"]]["add"] += commit["additions"]
-                yearly_data[curr_year][quarter][repo_details["primaryLanguage"]["name"]]["del"] += commit["deletions"]
+                if repo_details["primaryLanguage"] is not None:
+                    if curr_year not in yearly_data:
+                        yearly_data[curr_year] = dict()
+                    if quarter not in yearly_data[curr_year]:
+                        yearly_data[curr_year][quarter] = dict()
+                    if repo_details["primaryLanguage"]["name"] not in yearly_data[curr_year][quarter]:
+                        yearly_data[curr_year][quarter][repo_details["primaryLanguage"]["name"]] = {"add": 0, "del": 0}
+                    yearly_data[curr_year][quarter][repo_details["primaryLanguage"]["name"]]["add"] += commit["additions"]
+                    yearly_data[curr_year][quarter][repo_details["primaryLanguage"]["name"]]["del"] += commit["deletions"]
 
         if not EM.DEBUG_RUN:
             await sleep(0.4)