diff --git a/alice-ci/src/alice/runners/pythonrunner.py b/alice-ci/src/alice/runners/pythonrunner.py
index 55a6ab8..93bd4ca 100644
--- a/alice-ci/src/alice/runners/pythonrunner.py
+++ b/alice-ci/src/alice/runners/pythonrunner.py
@@ -18,6 +18,7 @@ class PythonRunner:
         PackageManager.getInstance().ensure("virtualenv")
         self.__init_venv()
 
+    # TODO: Detect if the prev venv is the same OS type
     def __init_venv(self):
         if os.name == "nt":  # Windows
             self.vpython = os.path.join(self.virtual_dir, "Scripts", "python.exe")
@@ -75,7 +76,7 @@ class PythonRunner:
                 run_env[k] = grab_from(v)
         if "env" in job_spec:
             for env_var in job_spec["env"]:
-                if isinstance(job_spec["env"], str):
+                if isinstance(env_var["value"], str):
                     run_env[env_var["name"]] = env_var["value"]
                 else:
                     run_env[env_var["name"]] = grab_from(env_var["value"])
diff --git a/alice-ci/src/alice/runners/pyutils.py b/alice-ci/src/alice/runners/pyutils.py
index 1dff2fd..3c8ba6c 100644
--- a/alice-ci/src/alice/runners/pyutils.py
+++ b/alice-ci/src/alice/runners/pyutils.py
@@ -130,7 +130,7 @@ def grab_from(target):
             value = None
         return value
     else:
-        raise ConfigException(f"Unsupported grabber: {target.keys()}")
+        raise ConfigException(f"Unsupported grabber: {target}")
 
 
 def gen_dict(list_of_dicts):