Block the error handler dialog in test mode

nw/error.py

@@ -77,13 +77,16 @@ def exceptionHandler(exType, exValue, exTrace):
     """
     import logging
     from traceback import print_tb, format_tb
-    from nw import __issuesurl__
+    from nw import CONFIG
     from PyQt5.QtWidgets import qApp, QApplication, QErrorMessage, QMessageBox
 
     logger = logging.getLogger(__name__)
     logger.error("%s: %s" % (exType.__name__, str(exValue)))
     print_tb(exTrace)
 
+    if not CONFIG.showGUI:
+        return
+
     try:
         nwGUI = None
         for qWin in qApp.topLevelWidgets():
@@ -104,3 +107,5 @@ def exceptionHandler(exType, exValue, exTrace):
 
     except Exception as e:
         logger.error(str(e))
+
+    return

nw/gui/build.py

@@ -432,7 +432,6 @@ class GuiBuildNovel(QDialog):
     def _buildPreview(self):
         """Build a preview of the project in the document viewer.
         """
-
         # Get Settings
         fmtTitle      = self.fmtTitle.text().strip()
         fmtChapter    = self.fmtChapter.text().strip()