18.06.1 Quagga vtysh 1.1.0 not working

wndr3700v2
18.06.1 official release
quagga was installed by opkg

2 issues:

1st:
vtysh output many error log:

# vtysh
Multiple command installs to node 4 of command:
list
Multiple command installs to node 4 of command:
exit
Multiple command installs to node 4 of command:
quit
Multiple command installs to node 4 of command:
terminal length <0-512>
Multiple command installs to node 4 of command:
terminal no length
Multiple command installs to node 4 of command:
show daemons
Multiple command installs to node 4 of command:
ping WORD
Multiple command installs to node 4 of command:
ping ip WORD
Multiple command installs to node 4 of command:
traceroute WORD
Multiple command installs to node 4 of command:
traceroute ip WORD
Multiple command installs to node 4 of command:
ping ipv6 WORD
Multiple command installs to node 4 of command:
traceroute ipv6 WORD
Multiple command installs to node 4 of command:
telnet WORD
Multiple command installs to node 4 of command:
telnet WORD PORT
Multiple command installs to node 4 of command:
ssh WORD
Multiple command installs to node 4 of command:
show memory
Multiple command installs to node 4 of command:
show work-queues
Multiple command installs to node 4 of command:
show work-queues (zebra|ripd|ripngd|ospfd|ospf6d|bgpd|isisd)
Multiple command installs to node 4 of command:
show thread cpu [FILTER]
Multiple command installs to node 4 of command:
show logging
Multiple command installs to node 4 of command:
show ipv6 mroute vrf all

Hello, this is Quagga (version 1.1.0).
Copyright 1996-2005 Kunihiro Ishiguro, et al.

ROUTER# 

2nd:
when I want to save config in vtysh

# wr
Building Configuration...
Can't open configuration file /etc/quagga/ospfd.conf.XXXXXX.
[OK]