gèng wěn de shuō fǎ shì wǒ xiān fù xiàn yī xià què rèn yuán yīn hòu gěi nín chǔ lǐ shí jiān

更稳的说法是：“我先复现一下，确认原因后给您处理时间。

A more stable way to say it is: 'I will first reproduce it, confirm the cause, and then give you the processing time.'