Is there a way to force estimation by ppmlhdfe when "mu has infinite values on iteration 12; aborting"

[lishu zhang]

Dear all,

When estimating one specification with PPMLHDFE, I encountered error message r(9003), "mu has infinite values on iteration 12; aborting". It concerns a yearly regression within my event study and thus I couldn't skip it nor change the specification. I wonder if there is a way to circumvent this error and still estimate this specification.

Thanks for any input!

Best regards,
Lishu