Man pages matching name pmierrstr in section 3:

pmiErrStr.3.en	debian 10 / libpcp3-dev
pmierrstr.3.en	debian 10 / libpcp3-dev
pmiErrStr.3.en	debian 11 / libpcp3-dev
pmiErrStr.3.en	debian 12 / libpcp3-dev