right script log

Fixes #1117

lgsm/functions/command_start.sh

@@ -12,7 +12,7 @@ local function_selfname="$(basename $(readlink -f "${BASH_SOURCE[0]}"))"
 fn_check_is_in_tmux(){
 	if [ -n "${TMUX}" ];then
 		fn_print_fail_nl "Can't start a tmux session inside of a tmux session."
-		fn_script_log_fail "Can't start a tmux session inside of a tmux session."
+		fn_script_log_fatal "Can't start a tmux session inside of a tmux session."
 		fn_print_information_nl "LGSM already runs the server inside of a tmux session."
 		core_exit.sh
 	fi