ecodina opened a new issue, #24919:
URL: https://github.com/apache/airflow/issues/24919
### Apache Airflow version
2.3.2 (latest released)
### What happened
I created a new email template to be sent when there are task failures. I
accidentally added the path to the `[email] html_content_template` and `[email]
subject_template` with a typo and no email was sent. The task's log is the
following:
```
Traceback (most recent call last):
File
"/home/user/.conda/envs/airflow/lib/python3.9/site-packages/airflow/models/taskinstance.py",
line 1942, in handle_failure
self.email_alert(error, task)
File
"/home/user/.conda/envs/airflow/lib/python3.9/site-packages/airflow/models/taskinstance.py",
line 2323, in email_alert
subject, html_content, html_content_err =
self.get_email_subject_content(exception, task=task)
File
"/home/user/.conda/envs/airflow/lib/python3.9/site-packages/airflow/models/taskinstance.py",
line 2315, in get_email_subject_content
subject = render('subject_template', default_subject)
File
"/home/user/.conda/envs/airflow/lib/python3.9/site-packages/airflow/models/taskinstance.py",
line 2311, in render
with open(path) as f:
FileNotFoundError: [Errno 2] No such file or directory:
'/home/user/airflow/config/templates/email_failure_subject.tmpl'
```
I've looked the TaskInstance class
(https://github.com/apache/airflow/blob/main/airflow/models/taskinstance.py).
I've seen that the `render` function
(https://github.com/apache/airflow/blob/bcf2c418d261c6244e60e4c2d5de42b23b714bd1/airflow/models/taskinstance.py#L2271)
has a `content` parameter, which is not used inside.
I guess the solution to this bug is simple: just add a `try - catch` block
and return the default content in the `catch` part.
### What you think should happen instead
_No response_
### How to reproduce
_No response_
### Operating System
CentOS Linux 8
### Versions of Apache Airflow Providers
_No response_
### Deployment
Other
### Deployment details
Conda environment
### 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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