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julia Current stable release: v1.10.3 (April 30, 2024) kernel fails to connect in IJulia jupyter

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Description

I've used many releases of julia over several years. The latest one fails with:

Connection failed

A connection to the notebook server could not be established. The notebook will continue trying to reconnect. Check your network connection or notebook server configuration.

The older prior one still works fine, with versioninfo() in a juypter cell giving:

Julia Version 1.10.2
Commit bd47eca2c8a (2024-03-01 10:14 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 8 × Intel(R) Core(TM) i7-6770HQ CPU @ 2.60GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-15.0.7 (ORCJIT, skylake)
Threads: 1 default, 0 interactive, 1 GC (on 8 virtual cores)

Here is my installation of julia-1.10.3 from repl:

gary@nuc04:~$ which julia-1.10.3
/usr/local/bin/julia-1.10.3
   _       _ _(_)_     |  Documentation: https://docs.julialang.org
  (_)     | (_) (_)    |
   _ _   _| |_  __ _   |  Type "?" for help, "]?" for Pkg help.
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 1.10.3 (2024-04-30)
 _/ |\__'_|_|_|\__'_|  |  Official https://julialang.org/ release
|__/                   |

julia> versioninfo()
Julia Version 1.10.3
Commit 0b4590a5507 (2024-04-30 10:59 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 8 × Intel(R) Core(TM) i7-6770HQ CPU @ 2.60GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-15.0.7 (ORCJIT, skylake)
Threads: 1 default, 0 interactive, 1 GC (on 8 virtual cores)

(@v1.10) pkg> update IJulia
    Updating registry at `~/.julia/registries/General.toml`
  No Changes to `~/.julia/environments/v1.10/Project.toml`
  No Changes to `~/.julia/environments/v1.10/Manifest.toml`

(@v1.10) pkg> status IJulia
Status `~/.julia/environments/v1.10/Project.toml`
  [7073ff75] IJulia v1.24.2

julia> installkernel("julia-1.10.3","julia-1.10.3")
[ Info: Installing julia-1.10.3 kernelspec in /home/gary/.local/share/jupyter/kernels/julia-1.10.3-1.10
"/home/gary/.local/share/jupyter/kernels/julia-1.10.3-1.10"

julia> using IJulia; notebook(detached=true)
[ Info: running `/usr/bin/jupyter notebook`
Process(setenv(`/usr/bin/jupyter notebook`; dir="/home/gary"), ProcessRunning)
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