IBM Security QRadar SOAR

Hi team, 

I tried today to update IBM Soar to the latest available version but got the message that the /dev/mapper/resilient-var_log folder is full.
I have tried every way to gain more space in this folder but to no avail.
Please, does anyone have an idea how I could solve this space problem to be able to install the update.

ERROR:

Verifying archive integrity...  100%   MD5 checksums are OK. All good.
Uncompressing IBM Security QRadar SOAR Platform
  100%
Verifying install on correct Linux distribution...
  Verified installing on Red Hat
Verifying minimum operating system version is 7.4 or 8.8...
  Verified operating system version is 7.9
Verifying minimum free disk space in partition that hosts directory /usr/share/co3 (partition /dev/mapper/resilient-co3) is 5120 MB...
  Verified free disk space is 39955 MB
Verifying minimum free disk space in partition that hosts directory /crypt (partition /dev/mapper/resilient-root) is 10240 MB...
  Verified free disk space is 93666 MB
Verifying minimum free disk space in partition that hosts directory /var/log (partition /dev/mapper/resilient-var_log) is 50 MB...
  Error: At least 50 MB of free disk space is required in partition /dev/mapper/resilient-var_log. Only 0 MB was detected.
Verifying minimum total RAM is 8 GB...
  Verified total RAM is 16 GB
Verifying package policycoreutils-python is installed...
  Verified policycoreutils-python is installed
Verifying package createrepo is installed...
  Verified createrepo is installed
Verifying pgbackrest version is 2.32...
  Verified pgbackrest version is 2.32

Error: IBM Security SOAR failed to install because the minimum system requirements were not met.

Thank you!