Running 'testthat.R' [117s]
Running the tests in 'tests/testthat.R' failed.
Complete output:
  > # This file is part of the standard setup for testthat.
  > # It is recommended that you do not modify it.
  > #
  > # Where should you do additional test configuration?
  > # Learn more about the roles of various files in:
  > # * https://r-pkgs.org/testing-design.html#sec-tests-files-overview
  > # * https://testthat.r-lib.org/articles/special-files.html
  > 
  > library(testthat)
  > library(GDILM.SEIRS)
  > 
  > test_check("GDILM.SEIRS")
  Saving _problems/test-GDILM_SEIRS_Sim_Par_Est-2.R
  [ FAIL 1 | WARN 0 | SKIP 0 | PASS 1 ]
  
  ══ Failed tests ════════════════════════════════════════════════════════════════
  ── Error ('test-GDILM_SEIRS_Sim_Par_Est.R:2:3'): An example for a simulation study ──
  Error in `solve.default(S40)`: system is computationally singular: reciprocal condition number = 3.45993e-17
  Backtrace:
      ▆
   1. └─GDILM.SEIRS::GDILM_SEIRS_Sim_Par_Est(...) at test-GDILM_SEIRS_Sim_Par_Est.R:2:3
   2.   └─GDILM.SEIRS (local) estfun(...)
   3.     ├─base::solve(S40)
   4.     └─base::solve.default(S40)
  
  [ FAIL 1 | WARN 0 | SKIP 0 | PASS 1 ]
  Error:
  ! Test failures.
  Execution halted