App inventor is unable to compile this project.(XML,SAXParseException;)

MIT App Inventor Help
1

java.lang.illegalStateException.org.xml.sax.SAXParseException;lineNumber1;columnNumber:4155; An invalid XML character(Unicode: 0x8) was found in the element content of the document.

Now this is the error message I get when I try to build my project to apk file. I tried to find where the lineNumber 1, columNumber 4155 by using Android Studio, Visual Studio code, but I can't find the scripte that is long enough over 4155.

Maybe my approach to this problem was wrong from the beginning. So.. Any advice?

2

Unicode 0x8 is the backspace character. Maybe your aia got damaged. Could you post it here?

3

(Canned Reply: ABG- Export & Upload .aia)
Export your .aia file and upload it here.
export_and_upload_aia

4

I had same problem on my project.
so, I've tried to export my project as aia file.
and then rename *.aia to *.zip to extract some files.

I found 0x8 which is in global variable name at [screen name].bky, and then just delete it(0x08) and re-zip.
SCR-20240130-mwbq

delete 0x08 on my bky file -> re-zip -> rename to *.aia -> import aia file to app inventor.

it works and builds well.

5

If you export and post the corrupt. .aia here for MIT to examine, that would help avoid the problem.

8

Hi, I have the same problem tonight with an .aia, albeit a different character:

App Inventor is unable to compile this project.
The compiler error output was
java.lang.IllegalStateException: org.xml.sax.SAXParseException; lineNumber: 92; columnNumber: 8560; An invalid XML character (Unicode: 0xb) was found in the element content of the document..

I exported the aia et reimported it, didn't change a thing. I dezippted it and looked for a 0xb somewhere without success.

I made almost no change since the last version which compiled fine. Any idea would be most welcome !
The aia is attached.
MyFoalsMLTest.aia (1.1 MB)

9

This is a big project, with loads of extensions, developed over a long period of time.

Browsing the blk files in 7zip, I noticed loads of comments.

Removing all of them from every screen using the @kevinkun AI2Helper browser extension, it was able to build on the code server.
MyFoalsMLTest (1).aia (1.0 MB)

10

Hi ABG, thanks a lot ! I'm not sure I totally understand what you did but I'm very thankful !
It sounds like my aia was corrupted by accumulated comments, is that it ? is there something I could do to keep it clean ?

11

The browser extension I used:

from

Also, don't hop on every extension you see.
They don't run on iOS, and they rot over time through neglect.

Watch for other errors at