"Package hash did not match" while installing on self-hosting sandstorm

[youchenlee]

Hi, I got the "Package hash did not match" error while installing on self-hosting sandstorm. (and it only happends on my self-hosting sandstorm) Log:

Downloading app: https://app-index.sandstorm.io/packages/7c76eaa536d4a28742e965ebccc1dc89
Failed to install app: Error: Package hash did not match.
    at AppInstaller.<anonymous> (server/installer.js:492:1)
    at IncomingMessage.<anonymous> (server/installer.js:365:1)
    at IncomingMessage.emit (events.js:117:20)
    at _stream_readable.js:944:16
    at process._tickCallback (node.js:448:13)

Thank you.