[Update_XML] Correct error when using wrong value

kibot/pre_update_xml.py

@@ -59,6 +59,8 @@ class Update_XML(BasePreFlight):  # noqa: F821
             self._check_pcb_parity = f.check_pcb_parity
             self.options = f
             self._pcb_related = True
+        else:
+            raise KiPlotConfigurationError('must be boolean or dict')
         self._sch_related = True
 
     @classmethod

tests/board_samples/kicad_6/.gitignore

@@ -4,3 +4,4 @@ test_v5/
 zone-refill.pro
 fp-info-cache
 *-bak
+pcb_parity.xml

tests/test_plot/test_yaml_errors.py

@@ -350,7 +350,7 @@ def test_error_wrong_type_3(test_dir):
 
 def test_error_wrong_type_4(test_dir):
     """ update_xml = number """
-    ctx = context.TestContext(test_dir, PRJ, 'error_pre_wrong_type_4')
+    ctx = context.TestContextSCH(test_dir, 'bom', 'error_pre_wrong_type_4')
     ctx.run(EXIT_BAD_CONFIG)
     assert ctx.search_err("In preflight 'update_xml': must be boolean")
     ctx.clean_up(keep_project=True)