Man pages matching name ppi::statement::unmatchedbrace in section 3pm:

PPI::Statement::UnmatchedBrace.3pm.en	debian 10 / libppi-perl
PPI::Statement::UnmatchedBrace.3pm.en	debian 11 / libppi-perl
PPI::Statement::UnmatchedBrace.3pm.en	debian 12 / libppi-perl