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[GH-ISSUE #153] bug: chat_messages INSERT crashes when Open WebUI `models` array reaches the scalar `model` column — message rows silently dropped #76

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opened 2026-10-18 14:02:42 +00:00 by bsakaguchi · 2 comments

bsakaguchi commented

2026-10-18 14:02:42 +00:00

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Originally created by @penradioGables on GitHub (Jul 17, 2026).
Original GitHub issue: https://github.com/open-webui/computer/issues/153

Version: cptr 0.9.8

Summary

Open WebUI sends models: ["cptr/cptr"] (a list). During a chat_messages INSERT, a list value is bound to a scalar TEXT column (schema: chats.py ~L509, model column), raising:

sqlite3.ProgrammingError: Error binding parameter 5: type 'list' is not supported

The INSERT rolls back and that message is not persisted.

Evidence (container stdout)

sqlalchemy.exc.ProgrammingError: (sqlite3.ProgrammingError) Error binding parameter 5: type 'list' is not supported
[INSERT INTO chat_messages (id, chat_id, parent_id, role, content, model, done, output, …)]

Impact

Silent loss of conversation turns; downstream history-reconstruction gaps.

Suggested fix

Coerce/validate non-scalar fields before bind (store model as a scalar, or JSON-encode); reject/normalize list-valued model at the gateway boundary.

Originally created by @penradioGables on GitHub (Jul 17, 2026). Original GitHub issue: https://github.com/open-webui/computer/issues/153 **Version:** cptr 0.9.8 ## Summary Open WebUI sends `models: ["cptr/cptr"]` (a list). During a `chat_messages` INSERT, a list value is bound to a scalar TEXT column (schema: `chats.py` ~L509, `model` column), raising: ``` sqlite3.ProgrammingError: Error binding parameter 5: type 'list' is not supported ``` The INSERT rolls back and that message is not persisted. ## Evidence (container stdout) ``` sqlalchemy.exc.ProgrammingError: (sqlite3.ProgrammingError) Error binding parameter 5: type 'list' is not supported [INSERT INTO chat_messages (id, chat_id, parent_id, role, content, model, done, output, …)] ``` ## Impact Silent loss of conversation turns; downstream history-reconstruction gaps. ## Suggested fix Coerce/validate non-scalar fields before bind (store `model` as a scalar, or JSON-encode); reject/normalize list-valued `model` at the gateway boundary.

bsakaguchi closed this issue

2026-10-18 14:02:42 +00:00

bsakaguchi commented

2026-10-18 14:02:43 +00:00

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@owui-terminator[bot] commented on GitHub (Jul 17, 2026):

⚠️ Missing Issue Title Prefix

@penradioGables, your issue title is missing a categorising prefix (e.g. bug:, feat:, docs:).

Please update the title to lead with one of:

bug: bug report or error
feat: feature request or enhancement
docs: documentation issue
question: usage question
help: support request

Example: bug: Login fails when the password contains special characters

@owui-terminator[bot] commented on GitHub (Jul 17, 2026): # ⚠️ Missing Issue Title Prefix @penradioGables, your issue title is missing a categorising prefix (e.g. `bug:`, `feat:`, `docs:`). Please update the title to lead with one of: - **bug**: bug report or error - **feat**: feature request or enhancement - **docs**: documentation issue - **question**: usage question - **help**: support request Example: `bug: Login fails when the password contains special characters`

bsakaguchi commented

2026-10-18 14:02:43 +00:00

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@tjbck commented on GitHub (Jul 18, 2026):

Should be addressed!

@tjbck commented on GitHub (Jul 18, 2026): Should be addressed!

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open-webui/computer#76

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[GH-ISSUE #153] bug: chat_messages INSERT crashes when Open WebUI models array reaches the scalar model column — message rows silently dropped #76

Summary

Evidence (container stdout)

Impact

Suggested fix

⚠️ Missing Issue Title Prefix

[GH-ISSUE #153] bug: chat_messages INSERT crashes when Open WebUI `models` array reaches the scalar `model` column — message rows silently dropped #76