fix str+int, raise excels dir create err

main.py

@@ -100,7 +100,7 @@ def process_excel_file(facultet, excel_url, counter, timeid):
 
             print("parsed done!")
             if prs.parser_error is not None:
-                excel_info["parser_error_cycle_" + excel_info['stat']['cycles']] = prs.parser_error
+                excel_info["parser_error_cycle_" + str(excel_info['stat']['cycles'])] = prs.parser_error
 
             for group_name in prs.groups.keys():
                 if group_name in result_groups.keys():
@@ -165,8 +165,9 @@ def main():
     try:
         os.mkdir(DIRNAME)
         print(f"Directory '{DIRNAME}' created successfully.")
-    except Exception:
-        print(f"Directory '{DIRNAME}' already exists.")
+    except Exception as e:
+        print(f"Failed create '{DIRNAME}': ")
+        raise e
 
     print("main(); parse links starting...")
     EXCEL_LINKS = links_parser.parse_links(FACULTETS if DEBUG_ONE_FAC is None else [DEBUG_ONE_FAC])