Hello,
I have the same problem on a pfsense box. I performed a fresh install on a VM on the same site with exactly the same configuration, and... no errors at all
For your information, the log line refers to a return from a "write" call.
write is the name of a function; it's a system call.
https://man.freebsd.org/cgi/man.cgi?write(2)
"
The write() system call attempts to write nbytes of data to the object
referenced by the descriptor fd from the buffer pointed to by buf.
"
https://man.freebsd.org/cgi/man.cgi?write(2)
So, for the following, fd=6 is the file descriptor where we're trying to write, and code=13 is the error code retrieved just after the write call, which returned -1.
"
Upon successful completion, the number of bytes which were written is returned. Otherwise, a -1 is returned, and the global variable errno is Set to indicate the error.
We learn that code 13 matches the description
EACCES 13 Permission denied
Either the process is not authorized to write to the file
not helfull but :
It's a permission issue; we're not supposed to be able to touch that from the web interface, I presume. Either it's a bug, or a third-party package is putting the problem in, etc.
Contrary to what Google says, this has nothing to do with firewall rules.