running the tests in ‘testthat.R’ failed

Failure in `/home/runner/work/_temp/package/rayshader/rayshader-tests/testthat.Rout.fail`

Test failures

could not find function "deferred_run"

Process completed with exit code 1.

Test failures

could not find function "deferred_run"

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'rgl.init' failed, running with 'rgl.useNULL = TRUE'.