I installed Bitcoin Core on a Raspberry Pi and tried to sync the block chain using bitcoind.
The data is written on an external hard drive (1TB) mounted on the machine.

After I run the `bitcoind -daemon` command, the block chain starts syncing, but after a few hours it stops.
This is what I have at the end of the debug.log file:

----
2019-02-10T05:41:04Z UpdateTip: new best=00000000727339b1f121c82ad73e522d8e83d7ed4b1b3473aa10f26029f2b046 height=12774 version=0x00000001 log2_work=45.641058 tx=12882 date='2009-04-30T12:58:37Z' progress=0.000035 cache=2.4MiB(12863txo)
2019-02-10T05:41:04Z Failed to open mempool file from disk. Continuing anyway.
2019-02-10T05:41:04Z tor: Thread interrupt
2019-02-10T05:41:04Z Shutdown: In progress...
2019-02-10T05:41:04Z addcon thread exit
2019-02-10T05:41:04Z opencon thread exit
2019-02-10T05:41:04Z torcontrol thread exit
2019-02-10T05:41:04Z net thread exit
2019-02-10T05:41:04Z msghand thread exit
2019-02-10T05:41:04Z scheduler thread interrupt
2019-02-10T05:41:06Z [default wallet] Releasing wallet
2019-02-10T05:41:06Z Shutdown: done
----

Does anyone have an idea? Thank you!

This is serious. Convince me please.