memory limit problems while scanning

hi
i have memory limit problems.
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FATAL ERROR:
: Out of memory (allocated 60293120) (tried to allocate 36 bytes)

[Dec 14 00:23:57] Fatal error: Out of memory (allocated 60293120) (tried to allocate 36 bytes) in /…/plugins/wordfence/lib/wordfenceHash.php on line 327

this happens while i scan:

my system configuration:
memory_limit 256M 120M

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Wordfence Memory benchmarking utility version 5.3.3.
This utility tests if your WordPress host respects the maximum memory configured
in their php.ini file, or if they are using other methods to limit your access to memory.

–Starting test–
Current maximum memory configured in php.ini: 256M
Current memory usage: 22.75M
Setting max memory to 90M.
Starting memory benchmark. Seeing an error after this line is not unusual. Read the error carefully
to determine how much memory your host allows. We have requested 90 megabytes.

<b>Fatal error</b>: Out of memory (allocated 59244544) (tried to allocate 36 bytes) in <b>/…/wordfence/lib/wordfenceClass.php</b> on line <b>2345</b>

https://wordpress.org/plugins/wordfence/