英文:
I have an error in the in the overlay.dart file when compliling the flutter project
问题
当构建我的Flutter项目时，之前一直可以编译完全没有问题，但从昨天开始，我遇到了这个问题 
我已经尽力升级了包和Flutter本身，但问题没有解决。
所以如果有人遇到了相同的问题或有解决方法，我将非常感激。
英文:
when building my flutter project that was compiling perfectly without any problem before but since yesterday i got that problem
ans i did all what i could do by upgrading the packages and the flutter itself, but the problem isn't solved
so if anyone face the same problem or have a solution for this problem i would be very thankful
答案1
得分: 0
以下是翻译好的部分：
错误的原因是 Overlay.of(context) 可能为空。可为空对象应使用 ?. 访问其字段。
将 Overlay.of(context).context.findRenderObject() 替换为 Overlay.of(context)?.context?.findRenderObject() 将修复问题。
英文:
The reason you get the error is Overlay.of(context) could be null. Nullable object should access its field with ?..
Replace Overlay.of(context).context.findRenderObject() with Overlay.of(context)?.context?.findRenderObject() will do the fix.
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