can't upgrade because of missing disk space

[sgw]

SG1100 with 23.05.1

pkg-static: Not enough space in /var/cache/pkg, needed 326 MiB available 266 MiB

I cleared the directory, no success. Where else can I free space ...?

 df -h
Filesystem                            Size    Used   Avail Capacity  Mounted on
pfSense/ROOT/default                  1.5G    1.2G    267M    82%    /
devfs                                 1.0K    1.0K      0B   100%    /dev
pfSense/var                           277M    9.9M    267M     4%    /var
pfSense/tmp                           267M    292K    267M     0%    /tmp
pfSense/var/log                       272M    5.2M    267M     2%    /var/log
pfSense/home                          267M    128K    267M     0%    /home
pfSense/var/db                        337M     70M    267M    21%    /var/db
pfSense/var/cache                     267M     96K    267M     0%    /var/cache
pfSense/var/tmp                       267M    112K    267M     0%    /var/tmp
pfSense/ROOT/default/cf               274M    6.7M    267M     2%    /cf
pfSense/ROOT/default/var_cache_pkg    267M    144K    267M     0%    /var/cache/pkg
pfSense/ROOT/default/var_db_pkg       274M    6.9M    267M     3%    /var/db/pkg
tmpfs                                 4.0M    160K    3.8M     4%    /var/run
devfs                                 1.0K    1.0K      0B   100%    /var/dhcpd/dev

[sgw]

Removed some unneeded boot environment snapshots ... fixed.
Now the download starts.