Man pages matching name pmdasenderror in section 3:

pmdaSendError.3.en	debian 10 / libpcp-pmda3-dev
pmdasenderror.3.en	debian 10 / libpcp-pmda3-dev
pmdaSendError.3.en	debian 11 / libpcp-pmda3-dev
pmdaSendError.3.en	debian 12 / libpcp-pmda3-dev