lede 大佬们，这是什么错误？

K3

系统日志：

Sun Jan 8 23:39:09 2023 daemon.err dawn: ubus_call_umdns()=ubus.c@1385 Failed to look up test object for umdns Sun Jan 8 23:39:19 2023 daemon.err dawn: ubus_call_umdns()=ubus.c@1385 Failed to look up test object for umdns Sun Jan 8 23:39:21 2023 daemon.err uhttpd[3254]: sh: yes: unknown operand Sun Jan 8 23:39:21 2023 daemon.err uhttpd[3254]: sh: yes: unknown operand Sun Jan 8 23:39:21 2023 daemon.err uhttpd[3254]: sh: yes: unknown operand Sun Jan 8 23:39:26 2023 daemon.err uhttpd[3254]: sh: yes: unknown operand Sun Jan 8 23:39:26 2023 daemon.err uhttpd[3254]: sh: yes: unknown operand Sun Jan 8 23:39:26 2023 daemon.err uhttpd[3254]: sh: yes: unknown operand Sun Jan 8 23:39:29 2023 daemon.err dawn: ubus_call_umdns()=ubus.c@1385 Failed to look up test object for umdns Sun Jan 8 23:39:39 2023 daemon.err dawn: ubus_call_umdns()=ubus.c@1385 Failed to look up test object for umdns Sun Jan 8 23:39:49 2023 daemon.err dawn: ubus_call_umdns()=ubus.c@1385 Failed to look up test object for umdns Sun Jan 8 23:39:59 2023 daemon.err dawn: ubus_call_umdns()=ubus.c@1385 Failed to look up test object for umdns Sun Jan 8 23:40:09 2023 daemon.err dawn: ubus_call_umdns()=ubus.c@1385 Failed to look up test object for umdns

daemon.err uhttpd[3254]: sh: yes: unknown operand daemon.err dawn: ubus_call_umdns()=ubus.c@1385 Failed to look up test object for umdns 这两个不断重复