atul-astronomer opened a new issue, #55142:
URL: https://github.com/apache/airflow/issues/55142
### Apache Airflow version
main (development)
### If "Other Airflow 2 version" selected, which one?
_No response_
### What happened?
```javascript
File "/opt/airflow/airflow-core/src/airflow/api_fastapi/main.py", line 27,
in <module>
app = cached_app(apps=os.environ.get("AIRFLOW_API_APPS", "all"))
File "/opt/airflow/airflow-core/src/airflow/api_fastapi/app.py", line 111,
in cached_app
app = create_app(apps=apps)
File
"/opt/airflow/airflow-core/src/airflow/utils/providers_configuration_loader.py",
line 54, in wrapped_function
return func(*args, **kwargs)
File "/opt/airflow/airflow-core/src/airflow/api_fastapi/app.py", line 97,
in create_app
init_ui_plugins(app)
File "/opt/airflow/airflow-core/src/airflow/api_fastapi/core_api/app.py",
line 200, in init_ui_plugins
plugins_manager.initialize_ui_plugins()
File "/opt/airflow/airflow-core/src/airflow/plugins_manager.py", line 396,
in initialize_ui_plugins
url_route = external_view["url_route"]
TypeError: list indices must be integers or slices, not str
```
### What you think should happen instead?
_No response_
### How to reproduce
Have the below file in your plugins folder:
```python
from airflow.plugins_manager import AirflowPlugin
external_views = [
{
"name": "Airflow Croma",
"href": "https://airflow.apache.org/docs/";,
"destination": "nav",
"icon": "book",
"url_route": None,
"category": "browse"
},
{
"name": "Grafana Dashboards",
"href": "https://grafana.mycompany.com/";,
"destination": "nav",
"icon": "activity",
"url_route": "my_external_view",
"category": "admin"
}
]
# Defining the plugin class
class AirflowTestPlugin2(AirflowPlugin):
name = "test_plugin2"
external_views = [external_views]
```
### Operating System
Linux
### Versions of Apache Airflow Providers
_No response_
### Deployment
Other
### Deployment details
_No response_
### Anything else?
_No response_
### Are you willing to submit PR?
- [ ] Yes I am willing to submit a PR!
### Code of Conduct
- [x] I agree to follow this project's [Code of
Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)
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