spring-projects / spring-projects/spring-ai
ChatVertexAI InvalidArgument Error (Gemini 2.5 Flash Model)
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- Dominant language
- Java
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Description
While making the LLM call from spring ai, with full prompt(system and user prompt) passed via .user(fullPrompt) facing issue like,
INVALID_ARGUMENT: Unable to submit request because it must include at least one parts field, which describes the prompt input.
This occurs because the payload for API end point is not constructed and passed properly.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by tracing ChatVertexAI's request construction for a call that passes the full system and user prompt through .user(fullPrompt), then reproduce the Gemini 2.5 Flash request. Done means the API payload includes at least one parts field and the call no longer returns the INVALID_ARGUMENT error.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java, spring
- Domain
- ai, api
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100