I have 2 identical ERP servers running, one is production and the other one is for development purpose. I have an issue about customer invoice (mako file), when i try to print it out i got this error message :

<% hargajual = math.floor(amount_base)%>TypeError: a float is required

But at the production server, there is no error at all when printing. The mako coding file are 100% identical because i copied it from production to development server. 

I think this is not about mako file (both again identical), but must be something else. Any idea what could cause this error?