My local server stuck on 50% while exporting apk

MIT App Inventor Help
1

I searched alot but anything doesn't work for me.
Here is the picture:

Stuck
Stuck1346×359 9.14 KB

2

Post the aia.

3

Here it is:
BBL.aia (1.4 KB)

4

Your .aia looks fine.

But your title says

My local server stuck on 50%

so ask on the support board for your 'local server'.

5

Reload the browser and try again.

6

I tried it but doesn't work