Error(s) in re-building vignettes:
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--- re-building ‘DClusterm.Rnw’ using Sweave
Loading required package: parallel
Loading required package: sp
Loading required package: spacetime
Loading required package: DCluster
Loading required package: boot
Loading required package: spdep
Loading required package: spData
To access larger datasets in this package, install the
spDataLarge package with: `install.packages('spDataLarge',
repos='https://nowosad.github.io/drat/', type='source')`
Loading required package: sf
Linking to GEOS 3.7.2, GDAL 2.4.2, PROJ 5.2.0
Loading required package: MASS
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Error: processing vignette 'DClusterm.Rnw' failed with diagnostics:
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make[1]: *** [Makefile:6: DClusterm.pdf] Error 1
make[1]: Leaving directory '/home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/DClusterm.Rcheck/vign_test/DClusterm/vignettes'
Error in tools:::buildVignettes(dir = "/home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/DClusterm.Rcheck/vign_test/DClusterm",  : 
  running ‘make’ failed
Execution halted