问invoke-rc.d:无法确定当前运行级别

EN

invoke-rc.d: could not determine current runlevel
 * Stopping MySQL database server mysqld                                                                                                                                                                                              [ OK ]
/var/lib/dpkg/info/mysql-server-5.7.postinst: line 191: /usr/share/mysql-common/configure-symlinks: No such file or directory
dpkg: error processing package mysql-server-5.7 (--configure):
 installed mysql-server-5.7 package post-installation script subprocess returned error exit status 127
dpkg: dependency problems prevent configuration of mysql-server:
 mysql-server depends on mysql-server-5.7; however:
  Package mysql-server-5.7 is not configured yet.

dpkg: error processing package mysql-server (--configure):
 dependency problems - leaving unconfigured
dmesg: read kernel buffer failed: Function not implemented
                                                          No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                                                                                    Processing triggers for libc-bin (2.27-3ubuntu1) ...
Processing triggers for systemd (237-3ubuntu10.29) ...
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
Processing triggers for ureadahead (0.100.0-21) ...
Errors were encountered while processing:
 mysql-server-5.7
 mysql-serverE: Sub-process /usr/bin/dpkg returned an error code (1)