Wpmu not working

ubuntu 2023
System Status:
Load : 0.24, 0.25, 0.23
CPU : 5.17338%
RAM : 755/3919MB (19.27%)
Disk : 23/25GB (95%)

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Last login: Tue May 7 10:04:23 2024 from
-bash: ‘PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/usr/local/bin’: No such file or directory

the first thing is when i resize the droplet the 94% full storage not changed
i want to create edit a site in multisite wordpress but after filling the form a non secure 500 page and sometimes blank page and different page in other browser occured
i tried to install wpcli and succeeded but when i wanted to create using command the blinker went to the next line and stopped for several .
support said it is from cpu and memory usage but nothing changed
also they said it is related to your ssl provider but is not
please help

no reply i need