Updating julia kernel

hey, iam working with julia v1.0.3 since 2 years, now i want to upgrade to the last version 1.1.1 available for the mini conda environment

trying also : sudo -E conda update julia

jupyter-devbox@quantiota:~$ sudo -E conda install -c conda-forge julia
Collecting package metadata (current_repodata.json): done
Solving environment: done

Package Plan

environment location: /opt/tljh/user

added / updated specs:
- julia

The following packages will be downloaded:

package                    |            build
---------------------------|-----------------
julia-1.0.3                |blas_openblash12d65f3_2        57.3 MB  conda-forge
openssl-1.1.1k             |       h27cfd23_0         2.5 MB
------------------------------------------------------------
                                       Total:        59.9 MB

The following packages will be UPDATED:

ca-certificates conda-forge/label/cf202003::ca-certif~ → conda-forge::ca-certificates-2020.12.5-ha878542_0
certifi conda-forge/label/cf202003::certifi-2~ → conda-forge::certifi-2020.12.5-py36h5fab9bb_1
openssl conda-forge/label/cf202003::openssl-1~ → pkgs/main::openssl-1.1.1k-h27cfd23_0

The following packages will be SUPERSEDED by a higher-priority channel:

julia conda-forge/label/cf202003 → conda-forge

Proceed ([y]/n)? y

Downloading and Extracting Packages
julia-1.0.3 | 57.3 MB | ################################################################################ | 100%
openssl-1.1.1k | 2.5 MB | ################################################################################ | 100%
Preparing transaction: done
Verifying transaction: done
Executing transaction: / ERROR: KeyError: key “JULIA_PKGDIR” not found
Stacktrace:
[1] (::getfield(Base, Symbol("##417#418")))(::String) at ./env.jl:76
[2] access_env at ./env.jl:45 [inlined]
[3] getindex(::Base.EnvDict, ::String) at ./env.jl:76
[4] top-level scope at none:0

WARNING conda.core.link:run_script(1203): pre-unlink script failed for package conda-forge/label/cf202003/linux-64::julia-1.0.3-blas_openblash12d65f3_2
consider notifying the package maintainer
/ Updating registry at ~/.julia/registries/General
Updating git-repo https://github.com/JuliaRegistries/General.git
Fetching: [> ] 0.0 %

done
jupyter-devbox@quantiota:~$