S3 exists method fails on non existent file

[emmettculley]

Laravel Version

10.43.0

PHP Version

8.1.27

Database Driver & Version

PostgreSql 10

Description

On S3, using Storage::exists($file_path) on a file that does not exist causes a whoops with the following error:

"UnableToCheckFileExistence"

If the file does exist, it returns true, and I am able to complete the action (delete, append, get).

"league/flysystem-aws-s3-v3": "^3.24.0",

I found a similar issue in issue #45639 (closed). From that I've verified that the bucket does have the s3:ListBucket permission mentioned in that issue.

I first tried it first with "league/flysystem-aws-s3-v3": "^3.11.0", and that didn't work either.

Steps To Reproduce

InvalidArgumentException UnableToCheckFileExistence
HTTP 500 Internal Server Error
Unable to check existence for:
League\Flysystem
UnableToCheckFileExistence

        if (!is_null($this->file_pdf)) {
            if (Storage::exists($this->file_pdf)) {
                Storage::delete($this->file_pdf);
            }
        }

FILESYSTEM_DISK=s3

[emmettculley]

Resolved. Turns out negelected to add 'use Storage' at the top. As soon as I added that line all was well.

I am surprised leavin that out didn't cause an exception on page load.

[emmettculley]

I was wrong. I was testng on wrong instance. The use Illuminate\Support\Facades\Storage; line was already in the file and an exception did happen when I attempted to run that controller method.

I am still at a loss, as the Storage::exists($filename) construct is used successfully in other methods. I'll need to verify that I am testing on those other methods that the file is missing.

[emmettculley]

Not at a loss now. Found that the variable containing the path was empty and I was testing for null, so I was calling Storate::exists($file) with an empty variable.

So now we know that calling Storage::exists with an empty string produced the "UnableToCheckFileExistence" error. Woluld have been nice if the error message was more informative.

Mayber this convoluted bug report will help somebody someday.