S3 AWS returning "Unable to check existence for: file" using Storage facade?

Hi guys. I've been facing a strange issue while using the Flysystem package for S3. Tried searching the web but little to none info about this case.

Currently using PHP 8.3.15, Laravel 11.31 and flysystem-aws-s3-v3 3.29.0

The bucket is already double checked for the right IAM permissions, as well as the config and .env file.

I can upload, delete and list all files in the bucket. However, when trying to inspect the bucket for a single file I get the following error:

League\Flysystem\UnableToRetrieveMetadata
Unable to retrieve the file_size for file at location: testimage.png.

We have another server with the same project, credentials, everything that runs without issues. It all points out to a config problem.

I also checked the file existence in the bucket.

The code, is a real simple conditional:

 if ($filename != null) {
            Log::info("Searching for: {$filename}");
            if (Storage::disk('s3')->exists($filename)) {
                Log::info("Found file");
                return Storage::disk('s3')->response($filename);
            } else {
                return $this->response->successReturn("No files were found", 200, [], true);
            }
        } else {
            $files = Storage::disk('s3')->files();
            $count = count($files);
            return $this->response->successReturn("Files:", 200, ["files" => $files, "quantity" => $count], true);
        }

I already tried using other methods like download, get, hasFile etc but it all give me a similar result.

Anyone ever faced similar issue?