error of MIN_NT_HILLS

[Ross, Sun]

Hi everyone,
I used CP2K_INPUT / MOTION / FREE_ENERGY / METADYN / MIN_NT_HILLS  in
my calculation. But the code gives the following error:

 *** 22:14:02 ERRORL2 in input_parsing:section_vals_parse err=-300
found  ***
 *** an unknown keyword MIN_NT_HILLS in section
METADYN                    ***
 *
Why the keyword MIN_NT_HILLS is unknown?  Did CP2K dismiss this
keyword?

Urgent!

Best Regards,
Ross