fritz-astronomer opened a new issue, #54155:
URL: https://github.com/apache/airflow/issues/54155
### Apache Airflow version
3.0.3
### If "Other Airflow 2 version" selected, which one?
_No response_
### What happened?
Example DAG:
```
from airflow.decorators import dag, task
@dag()
def exampledag():
@task
def sleeper():
sleep(100)
return 'good morning :)'
sleeper()
exampledag()
```
1. Triggered above DAG with no tasks (forgot to add the `sleeper()` line,
initially)
2. Corrected the DAG, Added the task
3. Retriggered the DAG
4. Task keeps getting marked `Removed`
<img width="915" height="434" alt="Image"
src="https://github.com/user-attachments/assets/8f5e5590-898b-444b-b5b6-740fc4cf3214";
/>
Related error in logs:
```
025-08-05T15:11:17.046543000-04:00During handling of the above exception,
another exception occurred:
2025-08-05T15:11:17.046546000-04:00
2025-08-05T15:11:17.046549000-04:00Traceback (most recent call last):
2025-08-05T15:11:17.046551000-04:00 File
"/usr/local/lib/python3.12/site-packages/uvicorn/protocols/http/httptools_impl.py",
line 409, in run_asgi
2025-08-05T15:11:17.046555000-04:00 result = await app( # type:
ignore[func-returns-value]
2025-08-05T15:11:17.046614000-04:00
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-08-05T15:11:17.046622000-04:00 File
"/usr/local/lib/python3.12/site-packages/fastapi/applications.py", line 1054,
in __call__
2025-08-05T15:11:17.046626000-04:00 await super().__call__(scope,
receive, send)
2025-08-05T15:11:17.046629000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/applications.py", line 112,
in __call__
2025-08-05T15:11:17.046632000-04:00 await self.middleware_stack(scope,
receive, send)
2025-08-05T15:11:17.046636000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/middleware/errors.py", line
187, in __call__
2025-08-05T15:11:17.046639000-04:00 raise exc
2025-08-05T15:11:17.046642000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/middleware/errors.py", line
165, in __call__
2025-08-05T15:11:17.046646000-04:00 await self.app(scope, receive, _send)
2025-08-05T15:11:17.046660000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/middleware/gzip.py", line
29, in __call__
2025-08-05T15:11:17.046668000-04:00 await responder(scope, receive, send)
2025-08-05T15:11:17.046671000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/middleware/gzip.py", line
126, in __call__
2025-08-05T15:11:17.046675000-04:00 await super().__call__(scope,
receive, send)
2025-08-05T15:11:17.046678000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/middleware/gzip.py", line
46, in __call__
2025-08-05T15:11:17.046684000-04:00 await self.app(scope, receive,
self.send_with_compression)
2025-08-05T15:11:17.046690000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/middleware/cors.py", line
85, in __call__
2025-08-05T15:11:17.046694000-04:00 await self.app(scope, receive, send)
2025-08-05T15:11:17.046697000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/middleware/base.py", line
176, in __call__
2025-08-05T15:11:17.046700000-04:00 with recv_stream, send_stream,
collapse_excgroups():
2025-08-05T15:11:17.046825000-04:00
^^^^^^^^^^^^^^^^^^^^
2025-08-05T15:11:17.046834000-04:00 File
"/usr/local/lib/python3.12/contextlib.py", line 158, in __exit__
2025-08-05T15:11:17.046837000-04:00 self.gen.throw(value)
2025-08-05T15:11:17.046841000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/_utils.py", line 82, in
collapse_excgroups
2025-08-05T15:11:17.046844000-04:00 raise exc
2025-08-05T15:11:17.046847000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/middleware/base.py", line
178, in __call__
2025-08-05T15:11:17.046851000-04:00 response = await
self.dispatch_func(request, call_next)
2025-08-05T15:11:17.046854000-04:00
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-08-05T15:11:17.046858000-04:00 File
"/usr/local/lib/python3.12/site-packages/airflow/api_fastapi/auth/managers/simple/middleware.py",
line 34, in dispatch
2025-08-05T15:11:17.046861000-04:00 return await call_next(request)
2025-08-05T15:11:17.046864000-04:00 ^^^^^^^^^^^^^^^^^^^^^^^^
2025-08-05T15:11:17.046867000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/middleware/base.py", line
156, in call_next
2025-08-05T15:11:17.046870000-04:00 raise app_exc
2025-08-05T15:11:17.046873000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/middleware/base.py", line
141, in coro
2025-08-05T15:11:17.046877000-04:00 await self.app(scope,
receive_or_disconnect, send_no_error)
2025-08-05T15:11:17.046880000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/middleware/base.py", line
176, in __call__
2025-08-05T15:11:17.046883000-04:00 with recv_stream, send_stream,
collapse_excgroups():
2025-08-05T15:11:17.046886000-04:00
^^^^^^^^^^^^^^^^^^^^
2025-08-05T15:11:17.046889000-04:00 File
"/usr/local/lib/python3.12/contextlib.py", line 158, in __exit__
2025-08-05T15:11:17.046905000-04:00 self.gen.throw(value)
2025-08-05T15:11:17.046911000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/_utils.py", line 82, in
collapse_excgroups
2025-08-05T15:11:17.046915000-04:00 raise exc
2025-08-05T15:11:17.046918000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/middleware/base.py", line
178, in __call__
2025-08-05T15:11:17.046921000-04:00 response = await
self.dispatch_func(request, call_next)
2025-08-05T15:11:17.046924000-04:00
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-08-05T15:11:17.046927000-04:00 File
"/usr/local/lib/python3.12/site-packages/airflow/api_fastapi/core_api/middleware.py",
line 28, in dispatch
2025-08-05T15:11:17.046931000-04:00 response = await call_next(request)
2025-08-05T15:11:17.046934000-04:00 ^^^^^^^^^^^^^^^^^^^^^^^^
2025-08-05T15:11:17.046937000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/middleware/base.py", line
156, in call_next
2025-08-05T15:11:17.046940000-04:00 raise app_exc
2025-08-05T15:11:17.046943000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/middleware/base.py", line
141, in coro
2025-08-05T15:11:17.046947000-04:00 await self.app(scope,
receive_or_disconnect, send_no_error)
2025-08-05T15:11:17.046950000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/middleware/base.py", line
176, in __call__
2025-08-05T15:11:17.046953000-04:00 with recv_stream, send_stream,
collapse_excgroups():
2025-08-05T15:11:17.046956000-04:00
^^^^^^^^^^^^^^^^^^^^
2025-08-05T15:11:17.046960000-04:00 File
"/usr/local/lib/python3.12/contextlib.py", line 158, in __exit__
2025-08-05T15:11:17.046963000-04:00 self.gen.throw(value)
2025-08-05T15:11:17.046986000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/_utils.py", line 82, in
collapse_excgroups
2025-08-05T15:11:17.046990000-04:00 raise exc
2025-08-05T15:11:17.046994000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/middleware/base.py", line
178, in __call__
2025-08-05T15:11:17.046997000-04:00 response = await
self.dispatch_func(request, call_next)
2025-08-05T15:11:17.047000000-04:00
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-08-05T15:11:17.047004000-04:00 File
"/usr/local/lib/python3.12/site-packages/astronomer/runtime/plugin.py", line
90, in dispatch
2025-08-05T15:11:17.047007000-04:00 response = await call_next(request)
2025-08-05T15:11:17.047010000-04:00 ^^^^^^^^^^^^^^^^^^^^^^^^
2025-08-05T15:11:17.047013000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/middleware/base.py", line
156, in call_next
2025-08-05T15:11:17.047016000-04:00 raise app_exc
2025-08-05T15:11:17.047019000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/middleware/base.py", line
141, in coro
2025-08-05T15:11:17.047022000-04:00 await self.app(scope,
receive_or_disconnect, send_no_error)
2025-08-05T15:11:17.047025000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/middleware/exceptions.py",
line 62, in __call__
2025-08-05T15:11:17.047203000-04:00 await
wrap_app_handling_exceptions(self.app, conn)(scope, receive, send)
2025-08-05T15:11:17.047208000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/_exception_handler.py", line
53, in wrapped_app
2025-08-05T15:11:17.047212000-04:00 raise exc
2025-08-05T15:11:17.047216000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/_exception_handler.py", line
42, in wrapped_app
2025-08-05T15:11:17.047219000-04:00 await app(scope, receive, sender)
2025-08-05T15:11:17.047222000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/routing.py", line 714, in
__call__
2025-08-05T15:11:17.047225000-04:00 await self.middleware_stack(scope,
receive, send)
2025-08-05T15:11:17.047228000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/routing.py", line 734, in app
2025-08-05T15:11:17.047231000-04:00 await route.handle(scope, receive,
send)
2025-08-05T15:11:17.047235000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/routing.py", line 288, in
handle
2025-08-05T15:11:17.047238000-04:00 await self.app(scope, receive, send)
2025-08-05T15:11:17.047241000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/routing.py", line 76, in app
2025-08-05T15:11:17.047244000-04:00 await
wrap_app_handling_exceptions(app, request)(scope, receive, send)
2025-08-05T15:11:17.047247000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/_exception_handler.py", line
53, in wrapped_app
2025-08-05T15:11:17.047251000-04:00 raise exc
2025-08-05T15:11:17.047254000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/_exception_handler.py", line
42, in wrapped_app
2025-08-05T15:11:17.047257000-04:00 await app(scope, receive, sender)
2025-08-05T15:11:17.047260000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/routing.py", line 73, in app
2025-08-05T15:11:17.047263000-04:00 response = await f(request)
2025-08-05T15:11:17.047266000-04:00 ^^^^^^^^^^^^^^^^
2025-08-05T15:11:17.047269000-04:00 File
"/usr/local/lib/python3.12/site-packages/fastapi/routing.py", line 301, in app
2025-08-05T15:11:17.047273000-04:00 raw_response = await
run_endpoint_function(
2025-08-05T15:11:17.047276000-04:00
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-08-05T15:11:17.047279000-04:00 File
"/usr/local/lib/python3.12/site-packages/fastapi/routing.py", line 214, in
run_endpoint_function
2025-08-05T15:11:17.047282000-04:00 return await
run_in_threadpool(dependant.call, **values)
2025-08-05T15:11:17.047285000-04:00
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-08-05T15:11:17.047288000-04:00 File
"/usr/local/lib/python3.12/site-packages/starlette/concurrency.py", line 37, in
run_in_threadpool
2025-08-05T15:11:17.047292000-04:00 return await
anyio.to_thread.run_sync(func)
2025-08-05T15:11:17.047295000-04:00
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-08-05T15:11:17.047335000-04:00 File
"/usr/local/lib/python3.12/site-packages/anyio/to_thread.py", line 56, in
run_sync
2025-08-05T15:11:17.047342000-04:00 return await
get_async_backend().run_sync_in_worker_thread(
2025-08-05T15:11:17.047346000-04:00
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-08-05T15:11:17.047349000-04:00 File
"/usr/local/lib/python3.12/site-packages/anyio/_backends/_asyncio.py", line
2470, in run_sync_in_worker_thread
2025-08-05T15:11:17.047352000-04:00 return await future
2025-08-05T15:11:17.047355000-04:00 ^^^^^^^^^^^^
2025-08-05T15:11:17.047358000-04:00 File
"/usr/local/lib/python3.12/site-packages/anyio/_backends/_asyncio.py", line
967, in run
2025-08-05T15:11:17.047362000-04:00 result = context.run(func, *args)
2025-08-05T15:11:17.047364000-04:00 ^^^^^^^^^^^^^^^^^^^^^^^^
2025-08-05T15:11:17.047368000-04:00 File
"/usr/local/lib/python3.12/site-packages/airflow/api_fastapi/core_api/routes/ui/grid.py",
line 527, in get_grid_ti_summaries
2025-08-05T15:11:17.047371000-04:00
dag_version_id=task_instances[0].dag_version_id,
2025-08-05T15:11:17.047374000-04:00 ~~~~~~~~~~~~~~^^^
2025-08-05T15:11:17.047491000-04:00IndexError: list index out of range
```
### What you think should happen instead?
_No response_
### How to reproduce
Reproduction instructions above
### Operating System
Astro Dev / Debian
### Versions of Apache Airflow Providers
_No response_
### Deployment
Astronomer
### 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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