@ricelover_888 The error shows that the file wasn't found. If you'd like to filter on the File Name, you'll need to use FileLeafRef in you ODATA filter query. Also, here's a fun fact. The Get Files (properties only) returns folders as well. You need to use a Filter Query to return Files only. Refer to this YT Short.

Whenever I use a Filter Query in a Get Files (properties only) action, I always like to return the count of items returned in a Compose action. This is helpful when building a flow and can also be used to troubleshoot your flow.
Insert a Compose action. Add an Expression. Use the length() function.

Select the Dynamic content tab and insert the value dynamic content from the Get Items action into the length() function.

Run a test. Review the output of the Compose action. See if the filter query has returned any files, if not—the Compose action will output a zero.
Condition Check
Add a Condition action to your flow. If files have returned (aka there is number stored in the Compose action—that is not equal to 0), add the rest of your actions to the Yes branch. If not, do nothing.

If you are only expecting 1 file to match, you'll want to avoid the Apply to Each action. Even if a single file has been returned from the Get files (properties only) action—it'll still return an array.
Take a look a this YT Tutorial: 3 Mistakes YOU 🫵 are Making with the Apply to Each Action in your Microsoft Power Automate Flow
In this video tutorial I’ll go over how to avoid these common mistakes when using the Apply to Each action in a Power Automate flow:
1️⃣ Looping through a Single Item
2️⃣ Creating Unnecessary Nested Loops
3️⃣ Looping through an Unfiltered Array
At the end of the video I share a few helpful insights when it comes to using the Apply to Each action in your flow.
IN THIS VIDEO:
✅ How to avoid the Apply to Each action with a single item array
✅ How to use the item() function to access dynamic content in an array
✅ How to prevent unnecessary nested Apply to Each action loops
✅ How to use the Select action
✅ How to convert an array to a string with the Select action
✅How to use the Filter Query field
✅ How to count the number of items in an array
✅ How to use a condition control
✅ How to use the concurrency control
✅ How to set a top count
✅ How to use Compose actions for troubleshooting
Hope this helps!
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