no ssh service available after upgrade os to 5.19

RouterOS Beginner Basics
1

Hi.

After Upgrade to v5.19 the ssh service is not longer available.

[admin@MikroTik] > /system routerboard print
routerboard: yes
model: 493G
serial-number: xxx
current-firmware: 2.39
upgrade-firmware: 2.41




[admin@MikroTik] > /ip service print
Flags: X - disabled, I - invalid 
 #   NAME                                               PORT ADDRESS                                                                                  CERTIFICATE                                             
 0 X telnet                                               23
 1 X ftp                                                  21
 2 X www                                                  80
 3                                                        22
 4 X www-ssl                                             443                                                                                          none                                                    
 5 X api                                                8728
 6   winbox                                             8291
[admin@MikroTik] >

Already tried to regenerate hostkey, but:

[admin@MikroTik] > /ip ssh regenerate-host-key
bad command name ssh (line 1 column 5)
[admin@MikroTik] >

Update:
After a short time shows high cpu usage

[admin@MikroTik] > /system resource monitor
          cpu-used: 100
  cpu-used-per-cpu: 100%
       free-memory: 238984

[admin@MikroTik] >

Any ideas?

2

problem solved

my solution:

  1. /system reset configuration
  2. import config file