When you are trying to get database file from sdcard to PC using
adb pull /sdcard/Vocab
sometimes this error message will occur
adb: error: connect failed: more than one device/emulator
In this video I have solved and given the reason.
On this page of the site you can watch the video online How to fix adb: error: connect failed: more than one device/emulator ? with a duration of hours minute second in good quality, which was uploaded by the user SL Coder Ego with Coding (SL Programmer) 19 July 2017, share the link with friends and acquaintances, this video has already been watched 30,709 times on youtube and it was liked by 59 viewers. Enjoy your viewing!