Plz help me how I can resolve this issue This appears during starting or shutdown

It looks like you may be starting your mac in verbose mode.

You should be able to undo this setting in the following way:

1) Open Terminal: press Command-Space, start typing the work Terminal and press enter

2) In the Terminal window, paste this line exactly (including the equal sign, and nothing afterwards) and press enter:

sudo nvram boot-args=

3) Type your password, as requested. There will be no feedback as you type (not even *** or •••) - that's normal.

Press enter.

4) Restart your mac. Does it still print all these messages as it starts?

NOTE: It may be that you got into this by means of a less than reputable program installed on your mac.

If you want us to check for possible issues in your system: Please run Etrecheck and post its full report here. Use the "additional text" button and paste the report into the text box.

Etrecheck is a diagnostic utility by etresoft, a respected member of this community. It does not change your system in any way. Its report will let us know about possible software or hardware problems.