Troubleshooting of Ollama API - Revision history

Planetoid at 02:46, 3 September 2025

2025-09-03T02:46:16Z

← Older revision		Revision as of 10:46, 3 September 2025
Line 33:		Line 33:

	This fix resolves the `"cannot unmarshal object into Go struct field ChatRequest.messages"` error.		This fix resolves the `"cannot unmarshal object into Go struct field ChatRequest.messages"` error.

			== Related links ==
			* Forum: [https://www.reddit.com/r/ollama/ ollama]

	[[Category: Tools]]		[[Category: Tools]]

Planetoid: /* How to fix "json: cannot unmarshal object ..." */

2025-08-29T05:48:17Z

How to fix "json: cannot unmarshal object ..."

← Older revision		Revision as of 13:48, 29 August 2025
Line 24:		Line 24:
	</pre>		</pre>

	Correct Format: ✅ This is an array containing an object		Correct Format in PHP: ✅ This is an array containing an object
	<pre>		<pre>
	'messages' => [['role' => 'user', 'content' => $message]]		'messages' => [['role' => 'user', 'content' => $message]]

Planetoid: /* How to fix "json: cannot unmarshal object ..." */

2025-08-29T05:47:02Z

How to fix "json: cannot unmarshal object ..."

← Older revision		Revision as of 13:47, 29 August 2025
Line 19:		Line 19:
	Root Cause: Incorrect `messages` format. The API expects an array format, but a single object was being sent.		Root Cause: Incorrect `messages` format. The API expects an array format, but a single object was being sent.

	Incorrect Format: ❌ This is an object		Incorrect Format in PHP: ❌ This is an object
	<pre>		<pre>
	'messages' => ['role' => 'user', 'content' => $message]		'messages' => ['role' => 'user', 'content' => $message]

Planetoid: /* How to fix "json: cannot unmarshal object ..." */

2025-08-29T04:03:45Z

How to fix "json: cannot unmarshal object ..."

← Older revision		Revision as of 12:03, 29 August 2025
Line 10:		Line 10:
	HTTP Error 400: {"error": "json: cannot unmarshal object into Go struct field ChatRequest.messages of type []api.Message"}		HTTP Error 400: {"error": "json: cannot unmarshal object into Go struct field ChatRequest.messages of type []api.Message"}
	</pre>		</pre>

			'''Applicable Model:'''

			* {{kbd \| key=gpt-oss:120b}}

	'''Solution'''		'''Solution'''

Planetoid: Created page with " Troubleshooting of [https://ollama.com/ Ollama] [https://github.com/ollama/ollama/blob/main/docs/api.md API] {{Raise hand | text = If you have any questions about the Ollama API, you can post them on the [https://github.com/ollama/ollama/issues Ollama GitHub Repository].}} == How to fix "json: cannot unmarshal object ..." == '''Error message:'''

 HTTP Error 400: {"error": "json: cannot unmarshal object into Go struct field ChatRequest.messages of type []api.Mess..."

2025-08-27T09:53:55Z

Created page with " Troubleshooting of [https://ollama.com/ Ollama] [https://github.com/ollama/ollama/blob/main/docs/api.md API] {{Raise hand | text = If you have any questions about the Ollama API, you can post them on the [https://github.com/ollama/ollama/issues Ollama GitHub Repository].}} == How to fix "json: cannot unmarshal object ..." == '''Error message:''' <pre> HTTP Error 400: {"error": "json: cannot unmarshal object into Go struct field ChatRequest.messages of type []api.Mess..."

New page

Troubleshooting of [https://ollama.com/ Ollama] [https://github.com/ollama/ollama/blob/main/docs/api.md API]

{{Raise hand | text = If you have any questions about the Ollama API, you can post them on the [https://github.com/ollama/ollama/issues Ollama GitHub Repository].}}

== How to fix "json: cannot unmarshal object ..." ==

'''Error message:'''
<pre>
HTTP Error 400: {"error": "json: cannot unmarshal object into Go struct field ChatRequest.messages of type []api.Message"}
</pre>

'''Solution'''

Root Cause: Incorrect `messages` format. The API expects an array format, but a single object was being sent.

Incorrect Format: ❌ This is an object
<pre>
'messages' => ['role' => 'user', 'content' => $message]
</pre>

Correct Format: ✅ This is an array containing an object
<pre>
'messages' => [['role' => 'user', 'content' => $message]]
</pre>

'''Explanation:'''
The `messages` parameter must be an array of message objects, not a single message object. Each message object should contain `role` and `content` properties. The extra square brackets `[]` wrap the message object into an array, which matches the API's expected format.

This fix resolves the `"cannot unmarshal object into Go struct field ChatRequest.messages"` error.

[[Category: Tools]]
[[Category: Ollama]]
[[Category: Revised with LLMs]]
[[Category: Generative AI]]