Fix 5379, 5429 (#5432)

Fix described in
https://github.com/xonsh/xonsh/issues/5358#issuecomment-2104322754
Closes #5379, #5429

## For community
⬇️ **Please click the 👍 reaction instead of leaving a `+1` or 👍
comment**

news/typerr.rst

@@ -0,0 +1,23 @@
+**Added:**
+
+* <news item>
+
+**Changed:**
+
+* <news item>
+
+**Deprecated:**
+
+* <news item>
+
+**Removed:**
+
+* <news item>
+
+**Fixed:**
+
+* Fixed ``TypeError`` in xoreutils.
+
+**Security:**
+
+* <news item>

xonsh/xoreutils/_which.py

@@ -215,7 +215,8 @@ def whichgen(command, path=None, verbose=0, exts=None):
     if os.sep in command or os.altsep and os.altsep in command:
         if os.path.exists(command):
             match = _cull((command, "explicit path given"), matches, verbose)
-            yield match
+            if match:
+                yield match
     else:
         for i in range(len(path)):
             dirName = path[i]