diff -r ccb13acd5283 -r 27bf2533f4a4 src/Pure/ML/ml_process.scala
--- a/src/Pure/ML/ml_process.scala	Sat Aug 20 13:16:15 2022 +0200
+++ b/src/Pure/ML/ml_process.scala	Sat Aug 20 13:28:31 2022 +0200
@@ -173,7 +173,7 @@
       val more_args = getopts(args)
       if (args.isEmpty || more_args.nonEmpty) getopts.usage()
 
-      val base_info = Sessions.base_info(options, logic, dirs = dirs).check
+      val base_info = Sessions.base_info(options, logic, dirs = dirs).check_errors
       val store = Sessions.store(options)
       val result =
         ML_Process(options, base_info.sessions_structure, store, logic = logic, args = eval_args,