More specific exception for unpackable objects
More specific exception for unpackable objects

rsalmaso/wagtail,rsalmaso/wagtail,torchbox/wagtail,rsalmaso/wagtail,gasman/wagtail,rsalmaso/wagtail,zerolab/wagtail,jnns/wagtail,thenewguy/wagtail,wagtail/wagtail,torchbox/wagtail,jnns/wagtail,thenewguy/wagtail,gasman/wagtail,wagtail/wagtail,wagtail/wagtail,mixxorz/wagtail,torchbox/wagtail,mixxorz/wagtail,zerolab/wagtail,gasman/wagtail,thenewguy/wagtail,jnns/wagtail,rsalmaso/wagtail,mixxorz/wagtail,zerolab/wagtail,torchbox/wagtail,thenewguy/wagtail,mixxorz/wagtail,zerolab/wagtail,thenewguy/wagtail,wagtail/wagtail,mixxorz/wagtail,zerolab/wagtail,jnns/wagtail,gasman/wagtail,wagtail/wagtail,gasman/wagtail