插件在调试的时候，因为输出参数报错而失败。

在工具试运行的时候，因为输出参数为空报错，线上使用没有这个问题。是开源版才有的么？

Start by reproducing issue #1989 in the plugin trial-run or debugging flow with an empty output parameter, then trace the resulting error to the relevant entry point. Check that the production path is unaffected, and consider the issue complete only when the open-source debugging flow handles this case without failing.

Written by the indexing model from the issue text.