Fix wrong permissions of the Quanty executable

src/crispy/quanty/calculation.py

@@ -375,8 +375,8 @@ def run(self, inputName):
         # Run Quanty using QProcess.
         try:
             self.start(self.executablePath, (inputName,))
-        except FileNotFoundError as error:
-            raise RuntimeError from error
+        except (FileNotFoundError, PermissionError) as e:
+            raise RuntimeError from e
 
         cwd = os.getcwd()
         message = f"Running Quanty {inputName} in the folder {cwd}."
@@ -455,6 +455,10 @@ def executablePath(self):
                 )
                 logger.error(message)
                 raise e
+            except PermissionError as e:
+                message = "The Quanty executable does not have the correct permissions."
+                logger.error(message)
+                raise e
         return path