Ticket Migration: MongoDB Crashes

After I run the migration and tests scripts, MongoDB crashes when I start the app:

Has the source code for the lab changed? I can’t continue to the next chapter because I’m stuck on the last lab of chapter 3.

Just to be clear. As the last line of output, (app crashed - waiting for file changes …), indicates, the app crashed, not MongoDB.

It looks like you are missing some files or directories. It, sometimes, happens when the app is not started from the correct directory. If it is the correct directory, then may be, some files were deleted by mistake. Another avenue might be to update depencies with npm.

Sorry, but I have no clue to help you further.