upgrade error

Unpacking replacement apt ...

Processing triggers for man-db ...

debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable

dpkg: error processing man-db (--unpack):

 subprocess installed post-installation script returned error exit status 1

No apport report written because MaxReports is reached already

                                                              Errors were encountered while processing:

 man-db

E: Sub-process /usr/bin/dpkg returned an error code (1)