I tried reghdfe for the first time and I used the following code to use reghdfe
But I get this error message.

Code:
reghdfe depvar var1 var2 ~ var7, absorb(day week week#city) compact pool(1) vce(robust[,bw(#)])
(MWFE estimator converged in 4 iterations)
class FixedEffects undefined
day has the following numbers: 01dec2011 ~ 31jan2019
week has the following numbers : 1 ~ 375
city has the following numbers : 1 ~ 7

i can't understand message "class FixedEffects undefined"
What's the problem?

and

There is one more question.
I understand that the standard errors of the two following codes are considered in the same way.
Is that right?
Code:
xtreg depvar indepvar, fe vce (r)
reghdfe depvar indepvar, absorb () vce (r, [bw (#)})
Thank you for any advice.