To be more specific I got this error too:
load 0x4010f000, len 1264, room 16
hal_init: ESP architecture
followed by a reboot. Tried both the normal LMIC-master library as the Things4u lmic-v1.5 , different pin settings.
Weird thing is I get the exact same behaviour when my protoshield is not connected; wiring seems to check out (or did I fry it while soldering..?).
RFM95 (sx1276, 868mhz) with what seems the correct settings in the cpp's, connected to a Wemos D1 mini (via DIO0, DIO1, NCK, NSS, MISO, MOSI, 3v and gnd); same pin mapping as the others.