What about ant build errors

What should I do?

Hello @yhl5285627,
It appears you are missing to download the Appinventor blockly and Google closure submodules, please run the following command to download them:

git submodules --init 

And then rebuild.

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what should i do about ant

Show you code

what should i do about ant

I merged your topics

new question thanks

It looks like you may have modified one or more of the message files in the blocklyeditor sources. The error indicates that the modified file violates the JSON syntax.