Need to explicitly restart session to clear persistent paths and models

tests/test_api.py

@@ -19,6 +19,7 @@ class TestServerBaseClass(unittest.TestCase):
             daemon=True
         )
         self.uri = f'http://{host}:{port}/'
+        requests.get(self.uri + 'restart')
         self.server_process.start()
 
     def copy_input_file_to_server(self):