Hi @Gerard2
I’ve made a test on my side and the flow has run successfully.
There is some problems in your flow.
If your ‘Get attachments’ step doesn’t get an error, then it indicates that the content you put in ‘List or Library Name’ is a list name and not a library name in ‘When an item or a file is modified’ trigger, as below:

But ‘Get file properties’ can only be used for a file/folder in a library. So if you use the ID for an item in a list to get file properties which should be in library, you will get an error.

If the problem still exists, please feel free to let me know. And could you take a screenshot of the detailed errors?
Best Regards,
Community Support Team _ Kira Xie
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