ERROR when updating from 6.53 to 6.56 on Linux

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Please confirm the following:

I have upgraded to the latest GAM release from https://github.com/GAM-team/GAM/releases and I still have this issue.
I am typing the command as described in the GAM Wiki at https://github.com/jay0lee/gam/wiki

Full steps to reproduce the issue:

Run "bash <(curl -s -S -L https://gam-shortn.appspot.com/gam-install) -l"
Returns: "ERROR: Attribute: browser_download_url for linux-x86_64-legacy.tar.xz version latest not found"

Expected outcome (what are you trying to do?): Just trying to update Linux version from 6.53 to 6.56. Has never failed like this before.

Actual outcome (what errors or bad behavior do you see instead?): ERROR: Attribute: browser_download_url for linux-x86_64-legacy.tar.xz version latest not found

GAM-team / GAM

ERROR when updating from 6.53 to 6.56 on Linux #1621