[Fixed]-How do I resolve the "'mathfilter' tag 'addition' stopped working since replicating django project" error?

1👍

https://github.com/dbrgn/django-mathfilters

addition – replacement for the add filter with support for float /
decimal types

Update to mathfilter to 0.4.0, things will be back to normal

0👍

For Python 3, just use {{ a|add:b}}

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