Plugin PyQt5 and PyQt6 compatible & CenRa_Copie bug fix

CenRa_COPIE/CenRa_Copie.py

@@ -24,8 +24,10 @@ pyperclip()
 from .copie_editor import Copie_Editor
 from .about_form import AboutDialog
 
-from PyQt5.QtCore import *
-
+try:
+    from PyQt5.QtCore import *
+except:
+    from PyQt6.QtCore import *
 class PgCopie:
     def __init__(self):
         """ Constructor. """
@@ -78,7 +80,7 @@ class PgCopie:
         About dialog
         """
         dialog = AboutDialog(iface)
-        dialog.exec_()
+        dialog.exec()
     def open_help():
         """ Open the online help. """
         QDesktopServices.openUrl(QUrl('https://plateformesig.cenra-outils.org/'))