diff --git a/PyInstaller/loader/pyimod03_importers.py b/PyInstaller/loader/pyimod03_importers.py
index 948bd9c780..40931371f8 100644
--- a/PyInstaller/loader/pyimod03_importers.py
+++ b/PyInstaller/loader/pyimod03_importers.py
@@ -33,7 +33,7 @@
 # with using type() function:
 imp_new_module = type(sys)
 
-if sys.flags.verbose:
+if sys.flags.verbose and sys.stderr:
     def trace(msg, *a):
         sys.stderr.write(msg % a)
         sys.stderr.write("\n")
diff --git a/news/4213.bugfix.rst b/news/4213.bugfix.rst
new file mode 100644
index 0000000000..14a101416c
--- /dev/null
+++ b/news/4213.bugfix.rst
@@ -0,0 +1,4 @@
+(Windows) Fix the frozen program crashing immediately with
+``Failed to execute script pyiboot01_bootstrap`` message when built in
+``noconsole`` mode and with import logging enabled (either via
+``--debug imports`` or ``--debug all`` command-line switch).