Change exception type

Author: sven-oly

testgen/generators/base.py

@@ -135,7 +135,7 @@ def readFile(self, filename, version="", filetype="txt"):
         try:
             with open(path, "r", encoding="utf-8") as testdata:
                 return json.load(testdata) if filetype == "json" else testdata.read()
-        except BaseException as err:
+        except Exception as err:
             logging.warning("** readFile: %s", err)
             return None