On 11/16/22 00:37, gzh wrote:
> Thank you very much for your advice.
>
> What I don't understand is that there is no problem when executing
> ① alone or ② alone,
> the error occurs when ① and ② are executed together .
> It works well when i let the application sleep after ① for 10 seconds
> before executing ② .
>
Is this true for large numbers of lines in you csv? Originally you said
something like 'adding 1000 lines' broke your app. Are you using
CopyManager?