Applescript to run javascript on chrome
Try adding single quotes around the word "disabled".  Like this...

tell application "Google Chrome"
    tell tab 2 of window 1 to set RemoveBtRestriction to execute javascript ¬
        "javascript:Array.from(document.getElementsByClassName('action-button'))
.forEach(function(v){v.removeAttribute('disabled');});"
end tell


I don't have a URL to test it on but at least the code compiles now