Package check result: ERROR

Check: examples, Result: ERROR
  Running examples in ‘mvgam-Ex.R’ failed
  The error most likely occurred in:
  
  > base::assign(".ptime", proc.time(), pos = "CheckExEnv")
  > ### Name: forecast.mvgam
  > ### Title: Extract or compute hindcasts and forecasts for a fitted 'mvgam'
  > ###   object
  > ### Aliases: forecast.mvgam
  > 
  > ### ** Examples
  > 
  > ## No test: 
  >   # Simulate data with 3 series and AR trend model
  >   simdat <- sim_mvgam(n_series = 3, trend_model = AR())
  > 
  >   # Fit mvgam model
  >   mod <- mvgam(
  +     y ~ s(season, bs = 'cc', k = 6),
  +     trend_model = AR(),
  +     noncentred = TRUE,
  +     data = simdat$data_train,
  +     chains = 2,
  +     silent = 2
  +   )
  specified C++17
  make cmd is
    make -f '/home/hornik/tmp/R/etc/Makeconf' -f '/home/hornik/tmp/R/share/make/shlib.mk' -f '/home/hornik/.R/Makevars-gcc' CXX='$(CXX17) $(CXX17STD)' CXXFLAGS='$(CXX17FLAGS)' CXXPICFLAGS='$(CXX17PICFLAGS)' SHLIB_LDFLAGS='$(SHLIB_CXX17LDFLAGS)' SHLIB_LD='$(SHLIB_CXX17LD)' SHLIB='file3b1f0c50f7b0e.so' OBJECTS='file3b1f0c50f7b0e.o'
  
  make would use
  g++-15 -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG   -I"/home/hornik/lib/R/Library/4.6/x86_64-linux-gnu/Rcpp/include/"  -I"/home/hornik/tmp/scratch/Rtmp1HUsDa/RLIBS_3b186749c2ef5c/RcppEigen/include/"  -I"/home/hornik/tmp/scratch/Rtmp1HUsDa/RLIBS_3b186749c2ef5c/RcppEigen/include/unsupported"  -I"/home/hornik/tmp/scratch/Rtmp1HUsDa/RLIBS_3b186749c2ef5c/BH/include" -I"/home/hornik/lib/R/Library/4.6/x86_64-linux-gnu/StanHeaders/include/src/"  -I"/home/hornik/lib/R/Library/4.6/x86_64-linux-gnu/StanHeaders/include/"  -I"/home/hornik/lib/R/Library/4.6/x86_64-linux-gnu/RcppParallel/include/"  -I"/home/hornik/lib/R/Library/4.6/x86_64-linux-gnu/rstan/include" -DEIGEN_NO_DEBUG  -DBOOST_DISABLE_ASSERTS  -DBOOST_PENDING_INTEGER_LOG2_HPP  -DSTAN_THREADS  -DUSE_STANC3 -DSTRICT_R_HEADERS  -DBOOST_PHOENIX_NO_VARIADIC_EXPRESSION  -D_HAS_AUTO_PTR_ETC=0  -include '/home/hornik/lib/R/Library/4.6/x86_64-linux-gnu/StanHeaders/include/stan/math/prim/fun/Eigen.hpp'  -D_REENTRANT -DRCPP_PARALLEL_USE_TBB=1   -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -fpic  -g -O2 -Wall -pedantic -mtune=native   -c file3b1f0c50f7b0e.cpp -o file3b1f0c50f7b0e.o
  if test  "zfile3b1f0c50f7b0e.o" != "z"; then \
    echo g++-15 -std=gnu++17 -shared -L"/home/hornik/tmp/R/lib" -Wl,-O1 -o file3b1f0c50f7b0e.so file3b1f0c50f7b0e.o  '/home/hornik/lib/R/Library/4.6/x86_64-linux-gnu/rstan/lib//libStanServices.a' -L'/home/hornik/lib/R/Library/4.6/x86_64-linux-gnu/StanHeaders/lib/' -lStanHeaders -L'/home/hornik/lib/R/Library/4.6/x86_64-linux-gnu/RcppParallel/lib/' -ltbb    -L"/home/hornik/tmp/R/lib" -lR; \
    g++-15 -std=gnu++17 -shared -L"/home/hornik/tmp/R/lib" -Wl,-O1 -o file3b1f0c50f7b0e.so file3b1f0c50f7b0e.o  '/home/hornik/lib/R/Library/4.6/x86_64-linux-gnu/rstan/lib//libStanServices.a' -L'/home/hornik/lib/R/Library/4.6/x86_64-linux-gnu/StanHeaders/lib/' -lStanHeaders -L'/home/hornik/lib/R/Library/4.6/x86_64-linux-gnu/RcppParallel/lib/' -ltbb    -L"/home/hornik/tmp/R/lib" -lR; \
  fi
  Error in sink(type = "output") : invalid connection