Error when submitting block

[Marty19]

Got the following in my TacoCoin debug.log when submitting an aux block:

ERROR: Aux POW missing chain merkle root in parent coinbase
ERROR: AUX POW is not valid

Any idea's what the cause is?

[Marty19]

getauxblock hash:
5bc00b0da6e5f6e1024080f5dfde0abade17815f79b5bf85c5192732084d6337

getauxblock auxpow:
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