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[GH-ISSUE #1914] [BUG]: text.substring workspace chat #1243

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opened 2026-02-22 18:23:54 -05:00 by yindo · 0 comments
yindo commented 2026-02-22 18:23:54 -05:00
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Originally created by @timothycarambat on GitHub (Jul 21, 2024).
Original GitHub issue: https://github.com/Mintplex-Labs/anything-llm/issues/1914

Originally assigned to: @timothycarambat on GitHub.

How are you running AnythingLLM?

All versions

What happened?

For some users, depending on context window length and the specific chat being sent it appears possible that a null string can be sent to the tiktoken calculation which causes a crash on an API call returning a null response.

 text.substring is not a function TypeError: text.substring is not a function
    at _Tiktoken.encode (/home/ubuntu/anything-llm/server/node_modules/js-tiktoken/dist/index.cjs:137:32)
    at TokenManager.tokensFromString (/home/ubuntu/anything-llm/server/utils/helpers/tiktoken.js:22:33)
    at TokenManager.countFromString (/home/ubuntu/anything-llm/server/utils/helpers/tiktoken.js:33:25)
    at /home/ubuntu/anything-llm/server/utils/helpers/tiktoken.js:47:28
    at Array.reduce (<anonymous>)
    at TokenManager.statsFrom (/home/ubuntu/anything-llm/server/utils/helpers/tiktoken.js:46:39)
    at messageArrayCompressor (/home/ubuntu/anything-llm/server/utils/helpers/chat/index.js:56:20)
    at GeminiLLM.compressMessages (/home/ubuntu/anything-llm/server/utils/AiProviders/gemini/index.js:223:18)
    at chatWithWorkspace (/home/ubuntu/anything-llm/server/utils/chats/index.js:206:39)
    at async /home/ubuntu/anything-llm/server/endpoints/api/workspace/index.js:594:24

Are there known steps to reproduce?

Send API workspace chats enough times until the models context window is overflow'd resulting in the chat needing to be pruned and managed

Originally created by @timothycarambat on GitHub (Jul 21, 2024). Original GitHub issue: https://github.com/Mintplex-Labs/anything-llm/issues/1914 Originally assigned to: @timothycarambat on GitHub. ### How are you running AnythingLLM? All versions ### What happened? For some users, depending on context window length and the specific chat being sent it appears possible that a null string can be sent to the tiktoken calculation which causes a crash on an API call returning a null response. ``` text.substring is not a function TypeError: text.substring is not a function at _Tiktoken.encode (/home/ubuntu/anything-llm/server/node_modules/js-tiktoken/dist/index.cjs:137:32) at TokenManager.tokensFromString (/home/ubuntu/anything-llm/server/utils/helpers/tiktoken.js:22:33) at TokenManager.countFromString (/home/ubuntu/anything-llm/server/utils/helpers/tiktoken.js:33:25) at /home/ubuntu/anything-llm/server/utils/helpers/tiktoken.js:47:28 at Array.reduce (<anonymous>) at TokenManager.statsFrom (/home/ubuntu/anything-llm/server/utils/helpers/tiktoken.js:46:39) at messageArrayCompressor (/home/ubuntu/anything-llm/server/utils/helpers/chat/index.js:56:20) at GeminiLLM.compressMessages (/home/ubuntu/anything-llm/server/utils/AiProviders/gemini/index.js:223:18) at chatWithWorkspace (/home/ubuntu/anything-llm/server/utils/chats/index.js:206:39) at async /home/ubuntu/anything-llm/server/endpoints/api/workspace/index.js:594:24 ``` ### Are there known steps to reproduce? Send API workspace chats enough times until the models context window is overflow'd resulting in the chat needing to be pruned and managed
yindo added the bugcore-team-only labels 2026-02-22 18:23:54 -05:00
yindo closed this issue 2026-02-22 18:23:54 -05:00
yindo changed title from [BUG]: `text.substring` workspace chat to [GH-ISSUE #1914] [BUG]: `text.substring` workspace chat 2026-06-05 14:39:42 -04:00
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Reference: Mintplex-Labs/anything-llm#1243
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