This question already has an answer here:
When I try to connect I get "Please check your wallet and daemon log for errors. You can also try to start monerod manually."
From bitmonero log... (below)
*:WARNING,net:FATAL,net.p2p:FATAL,net.cn:FATAL,global:INFO,verify:FATAL,stacktrace:INFO,logging:INFO,msgwriter:INFO 2018-05-07 21:36:09.033 0x7fffc70cd3c0 ERROR msgwriter src/common/scoped_message_writer.h:102 Error: Couldn't connect to daemon: 127.0.0.1:18081
Suggestions very gratefully received! Many thanks