starting up/shutdown of jail causes mountd error can\t open exports

[gwaitsi]

when i startup or shutdown a jail (any jail), i get the below error.

nas 1 2021-01-29T11:50:03.697115+01:00 nas.net.lan mountd 1546 - - can't open /etc/zfs/exports
nas 1 2021-01-29T11:50:03.698168+01:00 nas.net.lan mountd 1546 - - can't open /etc/zfs/exports
nas 1 2021-01-29T11:50:03.699726+01:00 nas.net.lan mountd 1546 - - can't open /etc/zfs/exports