On this page you will read how to find a log
If I had a situation where I got an unexpected message “Do not Install” I think that I could not stop myself from reading the log to find out what is going on!
Are you familiar with TWRP? If you had a fully functioning TWRP that had been correctly flashed reverting to the manual instructions would be a very reasonable thing to do (having fully reviewed the instructions! 
)Info page: https://doc.e.foundation/devices/dreamlte and install page: https://doc.e.foundation/devices/dreamlte/install
I wonder what made you pick e-0.15? Linked also from the install page are the available ROMs https://images.ecloud.global/stable/dreamlte/. Choose the latest; a 0.19 is listed today (notice the file name contains a coded date).
Good luck.
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