I needed some advice on clustering while using ivreghdfe.

My code is -
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ivreghdfe yvar (ever_win = true_treat), absorb(strata gender#batch city#batch yrs_school#batch age#batch mult_apply_hh#batch) vce(cluster unique_id)
I have 78,670 observations with about 42000 distinct unique_ids. The FEs in absorb() amount to about 3000 dummies.

The error I get is
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 insufficient observations
.

When I remove the vce(cluster) option, the code runs properly. Could you help out with what I must be doing wrong here?