diff --git a/.idea/dataSources.xml b/.idea/dataSources.xml
index 4db843a..5ae724c 100644
--- a/.idea/dataSources.xml
+++ b/.idea/dataSources.xml
@@ -6,7 +6,12 @@
       <synchronize>true</synchronize>
       <jdbc-driver>org.postgresql.Driver</jdbc-driver>
       <jdbc-url>jdbc:postgresql://localhost:5432/PdSDev</jdbc-url>
-      <working-dir>$ProjectFileDir$</working-dir>
+    </data-source>
+    <data-source source="LOCAL" name="nest@zero.ryg.one" uuid="78c48f2a-dd96-4b7f-942c-1e3346ac2c26">
+      <driver-ref>postgresql</driver-ref>
+      <synchronize>true</synchronize>
+      <jdbc-driver>org.postgresql.Driver</jdbc-driver>
+      <jdbc-url>jdbc:postgresql://zero.ryg.one:5432/nest</jdbc-url>
     </data-source>
   </component>
 </project>
\ No newline at end of file
diff --git a/code/backend/nest_backend/database/tables/Repository.py b/code/backend/nest_backend/database/tables/Repository.py
index 7484202..d82df97 100644
--- a/code/backend/nest_backend/database/tables/Repository.py
+++ b/code/backend/nest_backend/database/tables/Repository.py
@@ -22,5 +22,6 @@ class Repository(Base.Model):
     uses = Base.relationship("Uses", back_populates="repository")
 
     def to_json(self):
-        return {"id": self.id, "name": self.name, "start": self.start.isoformat(), "isActive":self.isActive,
-                "end":self.end.isoformat(),"owner": self.owner.to_json()}
+        return {"id": self.id, "name": self.name, "start": (self.start.isoformat() if self.start else None),
+                "isActive": self.isActive, "end": (self.end.isoformat() if self.end else None),
+                "owner": self.owner.to_json()}