wp_upload_media sends invalid JSON to the WordPress instance

[franck777]

✔  wp_upload_media (wordpress MCP Server) {"file_path":"/Users/xxx/Programming/xxx.fr/xxx…  │
 │                                                                                                                         │
 │    ```json                                                                                                              │
 │    [                                                                                                                    │
 │      {                                                                                                                  │
 │        "functionResponse": {                                                                                            │
 │          "name": "wp_upload_media",                                                                                     │
 │          "response": {                                                                                                  │
 │            "error": {                                                                                                   │
 │              "content": [                                                                                               │
 │                {                                                                                                        │
 │                  "type": "text",                                                                                        │
 │                  "text": "Error: Failed to upload media: Request failed after 3 attempts: Contenu JSON                  │
 │    transmis non valide."                                                                                                │
 │                }                                                                                                        │
 │              ],                                                                                                         │
 │              "isError": true                                                                                            │
 │            }                                                                                                            │
 │          }                                                                                                              │
 │        }                                                                                                                │
 │      }                                                                                                                  │
 │    ]                                                                                                                    │
 │    ```          

i was also able to reproduce issue by using the tool manually using mcptools and providing the file_path, alt_text and title, so this is not the model calling the tool improperly.