When I synced the network data, the wallet data will remain stuck for synchronization, 8 weeks ago.

Litecoin version: v0.15.1
QT version: 4.8.3
OS: Windows 7
litecoin.conf:

testnet=1
txindex=1
server=1
rpcuser=ffk
rpcpassword=ffk
rpcallowip=127.0.0.1
rpcallowip=192.168.1.120
rpcport=8336
port=8106
zmqpubrawtx=tcp://192.168.1.120:28336
zmqpubrawblock=tcp://192.168.1.120:28336
zmqpubhashtx=tcp://192.168.1.120:28336
zmqpubhashblock=tcp://192.168.1.120:28336