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When I try running the "lightningd/lightningd --network=testnet --log-level=debug" after sucessfully starting the Bitcoin server using the "bitcoind -daemon -testnet" ,following issue occurs:

lightningd/lightningd --network=testnet --log-level=debug 2018-02-12T12:34:40.313Z lightningd(14966): Trying to guess public addresses... 2018-02-12T12:34:40.313Z lightningd(14966): Address 192.168.0.73:9735 is not routable 2018-02-12T12:34:40.313Z lightningd(14966): Failed to connect 10 socket: Network is unreachable 2018-02-12T12:34:40.313Z lightningd(14966): testing /home/blockchain/lightning/lightningd/lightning_channeld 2018-02-12T12:34:40.314Z lightningd(14966): testing /home/blockchain/lightning/lightningd/lightning_closingd 2018-02-12T12:34:40.314Z lightningd(14966): testing /home/blockchain/lightning/lightningd/lightning_gossipd 2018-02-12T12:34:40.315Z lightningd(14966): testing /home/blockchain/lightning/lightningd/lightning_hsmd 2018-02-12T12:34:40.315Z lightningd(14966): testing /home/blockchain/lightning/lightningd/lightning_onchaind 2018-02-12T12:34:40.316Z lightningd(14966): testing /home/blockchain/lightning/lightningd/lightning_openingd 2018-02-12T12:34:40.471Z lightningd(14966): Client: Received message 11 from client 2018-02-12T12:34:40.480Z lightningd(14966): Loaded 0 invoices from DB 2018-02-12T12:34:40.480Z lightningd(14966): Client: Received message 9 from client 2018-02-12T12:34:40.480Z lightning_gossipd(14974): pid 14974, msgfd 12 2018-02-12T12:34:40.481Z lightningd(14966): Loaded 0 channels from DB bitcoin-cli exited with code 1: error: Could not locate RPC credentials. No authentication cookie could be found, and no rpcpassword is set in the configuration file (/home/lightning/.bitcoin/bitcoin.conf)

2018-02-12T12:34:40.518Z lightningd(14966): bitcoin-cli exited with code 1: error: Could not locate RPC credentials. No authentication cookie could be found, and no rpcpassword is set in the configuration file (/home/lightning/.bitcoin/bitcoin.conf)

Log dumped in crash.log 2018-02-12T12:34:40.545Z lightningd(14966): FATAL SIGNAL 6 RECEIVED 2018-02-12T12:34:40.548Z lightningd(14966): backtrace: lightningd/log.c:486 (log_crash) 0x410b18 2018-02-12T12:34:40.561Z lightningd(14966): backtrace: (null):0 ((null)) 0x7fc0b7dc24af 2018-02-12T12:34:40.561Z lightningd(14966): backtrace: (null):0 ((null)) 0x7fc0b7dc2428 2018-02-12T12:34:40.561Z lightningd(14966): backtrace: (null):0 ((null)) 0x7fc0b7dc4029 2018-02-12T12:34:40.561Z lightningd(14966): backtrace: lightningd/log.c:575 (fatal) 0x410f52 2018-02-12T12:34:40.561Z lightningd(14966): backtrace: lightningd/bitcoind.c:723 (wait_for_bitcoind) 0x4056c9 2018-02-12T12:34:40.562Z lightningd(14966): backtrace: lightningd/chaintopology.c:723 (setup_topology) 0x407bd8 2018-02-12T12:34:40.562Z lightningd(14966): backtrace: lightningd/lightningd.c:331 (main) 0x40f258 2018-02-12T12:34:40.562Z lightningd(14966): backtrace: (null):0 ((null)) 0x7fc0b7dad82f 2018-02-12T12:34:40.562Z lightningd(14966): backtrace: (null):0 ((null)) 0x403248 2018-02-12T12:34:40.562Z lightningd(14966): backtrace: (null):0 ((null)) 0xffffffffffffffff Fatal signal 6. 0x410bfe log_crash lightningd/log.c:512 0x7fc0b7dc24af ??? ???:0 0x7fc0b7dc2428 ??? ???:0 0x7fc0b7dc4029 ??? ???:0 0x410f52 fatal lightningd/log.c:575 0x4056c9 wait_for_bitcoind lightningd/bitcoind.c:723 0x407bd8 setup_topology lightningd/chaintopology.c:723 0x40f258 main lightningd/lightningd.c:331 0x7fc0b7dad82f ??? ???:0 0x403248 ??? ???:0 0xffffffffffffffff ??? ???:0 Log dumped in crash.log Aborted (core dumped)

Can anybody please solve my issue and explain me what is exactly happening!

1

The issue seems to be contained in the error message.

Could not locate RPC credentials. No authentication cookie could be found, and no rpcpassword is set in the configuration file (/home/lightning/.bitcoin/bitcoin.conf)

So, set rpcuser and rpcpassword appropriately in ~/.bitcoin/bitcoin.conf.

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