[bug]: <short summary>[bug]: Internal Server Error 500 on file upload to shelbynet

[buraksk1]

Affected product

CLI

Version / Commit / Build

0.0.26

Platform / Environment

MacOS

Steps to Reproduce

1. Install Shelby CLI v0.0.26
2. Run: shelby init
3. Run: shelby context use shelbynet
4. Run: shelby upload ~/Desktop/test.txt test/test.txt -e tomorrow --assume-yes

Expected Behavior

File should upload successfully and return a transaction hash with Aptos Explorer link.

Actual Behavior & Errors

Failed to complete multipart upload! status: 500, body: Internal Server Error

Logs / Screenshots

Contact (Optional)

buraq_c

Pre-Checks

• I've searched existing issues
• This is not a security vulnerability (see SECURITY.md)