Package: SuperLearner 2.0-29
Check: tests, Result: ERROR
    Running ‘testthat.R’
  Running the tests in ‘tests/testthat.R’ failed.
  Last 13 lines of output:
    [ FAIL 1 | WARN 34 | SKIP 0 | PASS 67 ]
    
    ══ Failed tests ════════════════════════════════════════════════════════════════
    ── Error ('test-XGBoost.R:25:1'): (code run outside of `test_that()`) ──────────
    Error in `UseMethod("predict")`: no applicable method for 'predict' applied to an object of class "NULL"
    Backtrace:
        ▆
     1. ├─stats::predict(sl, X) at test-XGBoost.R:25:1
     2. └─SuperLearner::predict.SuperLearner(sl, X)
     3.   ├─base::do.call(...)
     4.   └─stats::predict(...)
    
    [ FAIL 1 | WARN 34 | SKIP 0 | PASS 67 ]
    Error: Test failures
    Execution halted
