'Airflow FileSensor cannot sensor a file that exists

A file sensor task I run on a daily bases failed this morning. I found the target file sitting there, so I ran the task again. However, it kept poking for the file until the sensor timed out. Then I tried running it a couple of times, but it just kept failing.

I'm sure the directory is accessible by my DAG. Could anyone help me out here please? A file sitting there but Airflow FileSensor just cannot sensor it.

Thank you.

linuxairflow


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