Conky Manager 2 is not possible to install

I tried to install Conky manager 2 via Add/Remove Sofrtware but it is impossible.
I used repo - conky-manager2-git
There is log output.

Preparing...
Cloning conky-manager2-git build files...
Generating conky-manager2-git information...
Checking conky-manager2-git dependencies...
Resolving dependencies...
Checking inter-conflicts...

Building conky-manager2-git...
==> Making package: conky-manager2-git 2.7-3 (Ut 15. február 2022, 16:49:46)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Retrieving sources...
  -> Updating conky-manager2-git git repo...
Fetching origin
  -> Found conky-manager2-git.install
  -> Found perm.patch
==> Validating source files with sha1sums...
    conky-manager2-git ... Skipped
    conky-manager2-git.install ... Passed
    perm.patch ... Passed
==> Removing existing $srcdir/ directory...
==> Extracting sources...
  -> Creating working copy of conky-manager2-git git repo...
Cloning into 'conky-manager2-git'...
done.
==> Starting prepare()...
patching file src/makefile
Hunk #1 FAILED at 29.
1 out of 1 hunk FAILED -- saving rejects to file src/makefile.rej
==> ERROR: A failure occurred in prepare().
    Aborting...

Is it possible to fix it?

There is a problem with the patch used here. See the latest comment on the AUR page. You can install conky-manager from manjaro repos → sudo pacman -S conky-manager .

A similar error to OP has been reported to AUR page - 2021-11-27 10:05 (UTC)

conky-manager has not been maintained at source since 2015, and has not worked on Manjaro since 2020 when conky dropped support for old style conkyrc configuration files
Conky On Latest Manjaro KDE