错误“mutate()”：！计算时出现问题。无效的版本规范”

Question

我正在运行以下一段工作​​正常的代码：

df_New <- df %>% 
+     mutate(column1 = map(column1, ~ py_eval(.x) %>% 
+                                        bind_rows))  %>% 
+     unnest(column1)

但是，当稍后返回时，我在尝试重新运行代码时收到此错误：

Error in `mutate()`:
! Problem while computing `column1 = map(column1,
  ~py_eval(.x) %>% bind_rows)`.
Caused by error:
! invalid version specification ‘'\\.\tm1174\w2k'’, ‘..EXE was started with the above path as the current directory.’, ‘. paths are not supported.  Defaulting to Windows directory.’
Run `rlang::last_error()` to see where the error occurred.
Warning message:
Problem while computing `column1 = map(column1, ~py_eval(.x) %>% bind_rows)`.
i the condition has length > 1 and only the first element will be used 

我不知道发生了什么变化。有人能指出我正确的方向吗？