update the error message

src/ansys/tools/path/path.py

@@ -1109,8 +1109,6 @@ def _mechanical_version_from_path(path: str) -> int:
     """
     # expect v<ver>/ansys
     # replace \\ with / to account for possible windows path
-    if path is None:
-        raise Exception("Path is None")
     matches = re.findall(r"v(\d\d\d)", path.replace("\\", "/"), re.IGNORECASE)
     if not matches:
         raise RuntimeError(f"Unable to extract Mechanical version from {path}.")
@@ -1159,9 +1157,9 @@ def version_from_path(product: PRODUCT_TYPE, path: str) -> int:
     """
     if not isinstance(path, str):
         raise ValueError(
-            f"Provided path '{path}' is not valid string."
-            "Check if the {product} is installed in default location"
-            "If not use 'save-ansys-path' to save the path."
+            f"Provided path '{path}' is not valid string. "
+            "Check if the {product} is installed in default location. "
+            "If not use ``save-ansys-path`` to save the path."
         )
     if product == "mechanical":
         return _mechanical_version_from_path(path)