What is the meaning of this?

[chelseas]

$ julia
_
_ _ ()_ | Documentation: https://docs.julialang.org
() | () () |
_ _ | | __ _ | Type "?" for help, "]?" for Pkg help.
| | | | | | |/ ` | |
| | || | | | (| | | Version 1.5.4 (2021-03-11)
/ |_'|||_'_| | Official https://julialang.org/ release
|__/ |

julia> using IJulia

julia> notebook()
[ Info: running /usr/bin/jupyter notebook
Process(setenv(/usr/bin/jupyter notebook; dir="/home/chelsea"), ProcessExited(1))

julia> versioninfo()
Julia Version 1.5.4
Commit 69fcb5745b (2021-03-11 19:13 UTC)
Platform Info:
OS: Linux (x86_64-pc-linux-gnu)
CPU: AMD Ryzen 7 4800H with Radeon Graphics
WORD_SIZE: 64
LIBM: libopenlibm
LLVM: libLLVM-9.0.1 (ORCJIT, znver2)

[fredrikekre]

/usr/bin/jupyter notebook failed. If you run that from your shell you can probably see more verbose output.