Mathematics tools

So I found another thread from 2015 with the same issue, but as far as I can tell, those issues don't fix my problem.

So I've set up a new site with Stack and Maxima (version 5.41) and clisp (version 2.39) and it works for about 24 hours, before stopping and giving the following error:

*** - UNIX error 13 (EACCES): Permission denied
Break 1 [4]> 
*** - SYSTEM::READ-EVAL-PRINT: variable LOAD has no value
The following restarts are available:
USE-VALUE      :R1      Input a value to be used instead of LOAD.
STORE-VALUE    :R2      Input a new value for LOAD.
ABORT          :R3      Abort debug loop
Break 2 [5]> 
*** - READ from
       #<INPUT CONCATENATED-STREAM #<INPUT STRING-INPUT-STREAM>
         #<IO TWO-WAY-STREAM
           #<INPUT UNBUFFERED FILE-STREAM CHARACTER #P"/dev/fd/0" @4>
           #<OUTPUT UNBUFFERED FILE-STREAM CHARACTER #P"/dev/fd/1">>>
      : there is no package with name "CAB"
The following restarts are available:
ABORT          :R1      Abort debug loop
ABORT          :R2      Abort debug loop
Break 3 [6]> 
*** - SYSTEM::READ-EVAL-PRINT: variable QUIT has no value
The following restarts are available:
USE-VALUE      :R1      Input a value to be used instead of QUIT.
STORE-VALUE    :R2      Input a new value for QUIT.
ABORT          :R3      Abort debug loop
ABORT          :R4      Abort debug loop
ABORT          :R5      Abort debug loop
Break 4 [7]>  The CAS timed out. ] ] ] ]

unpack_raw_result: no STACKSTART returned. Data returned was: 
*** - UNIX error 13 (EACCES): Permission denied
Break 1 [4]> 
*** - SYSTEM::READ-EVAL-PRINT: variable LOAD has no value
The following restarts are available:
USE-VALUE      :R1      Input a value to be used instead of LOAD.
STORE-VALUE    :R2      Input a new value for LOAD.
ABORT          :R3      Abort debug loop
Break 2 [5]> 
*** - READ from
       #<INPUT CONCATENATED-STREAM #<INPUT STRING-INPUT-STREAM>
         #<IO TWO-WAY-STREAM
           #<INPUT UNBUFFERED FILE-STREAM CHARACTER #P"/dev/fd/0" @4>
           #<OUTPUT UNBUFFERED FILE-STREAM CHARACTER #P"/dev/fd/1">>>
      : there is no package with name "CAB"
The following restarts are available:
ABORT          :R1      Abort debug loop
ABORT          :R2      Abort debug loop
Break 3 [6]> 
*** - SYSTEM::READ-EVAL-PRINT: variable QUIT has no value
The following restarts are available:
USE-VALUE      :R1      Input a value to be used instead of QUIT.
STORE-VALUE    :R2      Input a new value for QUIT.
ABORT          :R3      Abort debug loop
ABORT          :R4      Abort debug loop
ABORT          :R5      Abort debug loop
Break 4 [7]>  The CAS timed out. ] ] ] ]]]]]