Z:gnu-man-db-manpages--025e67-An attempt to extract whatis l/en

An attempt to extract whatis line(s) from the given EfilenameE failed. This is usually due to a poorly written manual page, but if many such messages are emitted it is likely that the system contains non-standard manual pages which are incompatible with the man-db whatis parser. See the B section in B (1) for more information.