"Panel must be strongly balanced" in bacondecomp command

[Phuc Nguyen]

Today when running the simple regression as below, the code works well

reghdfe y x1 x2 , a(TYPE2 yr)

However, when I run the below code with bacondecomp command (https://ideas.repec.org/c/boc/bocode...2ah0nsRMWyhik0)

bacondecomp y x1 x2, a(TYPE2 yr)

The code generates the error below

Panel must be strongly balanced, i.e. each panel must have the same set of time points
with no control variables, must specify the detail option currently (only works without weights)
invalid syntax
r(198);

I am wondering what is the problem here and how to sort it out, thanks in advance

[Carlo Lazzaro]

Phuc:
the problem here is that you tried to use on your unbalanced panel a community-contribute module that requires a strongly balanced panel to work.
Therefore, you may want to consider imputing the missing data (at the risk of ending up with a sample of observations with tenuous relationships with the original one) or to change your analysis after -reghdfe- (which is another community-contributed programme, as the FAQ asks us to mention in our post, and for very good reasons, too).