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I am getting this error when I modified one file(any file that belong to the asset aimfluent chatbot) after running the application. It won't appear when I am editing other file except aimfluent asset scripts (I am not using firebase). I am using 2021.3.13f1 unity version (windows).

Internal build system error. Backend exited with code 2. tundra: error: Unexpected stdin

I have tried several solutions available (here) such as deleting Library/Bee folder, deleting Library folder, restarting, deleting RAV antivirus, etc. However still I am getting this error and couldn't develop my game. When I try to build the project it shows this error,

Internal build system error. Backend exited with code 2.

STDOUT:

Finished compiling graph: 519 nodes, 6427 flattened edges (6427 ToBuild, 0 ToUse), maximum node priority 200

STDERR:

tundra: error: Unexpected stdin

I have been looking for a solution to this for 2 days. Appreciate if anyone can help me to get rid of this error.

Rashmika Silva
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1 Answers1

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I had this problem. Apparently, it's caused by Firebase. this fixed it for me firebase-unity-sdk-editor-python-fix

Peyman Ansary
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