I am using the following rdrobust command:

rdrobust health cage if male==1, c(0) fuzzy(retired) covs(controls) all vce(cluster id)

It gives me an error "rdrobust() not able to compute the loc. poly. bandwidth (h) above the threshold. Please run rdbwselect() for more information}"

Then I run the following:
. rdbwselect healthp cage if male==1, c(0) fuzzy(retired)
Bandwidth estimators for fuzzy RD local polynomial regression.
Cutoff c = Left of c Right of c Number of obs = 1881
Kernel = Triangular
Number of obs 1621 260 VCE method = NN
Min of cage -28.000 0.000
Max of cage -1.000 19.000
Order est. (p) 1 1
Order bias (q) 2 2
Outcome: healthp. Running variable: cage. Treatment Status: retired.
BW est. (h) BW bias (b)
Method Left of c Right of c Left of c Right of c
mserd 5.686 5.686 11.715 11.715

Is there a way to fix this problem? Thanks!