Parse Data is giving error while calling it from js api

[ayushk-singh]

I am build this flow when i run it in playground it works fine but when i call it through my api i get this error Error: {detail: {"message":"Error running graph: Error building Component Parse Data: \\n\\nstring indices must be integers, not 'str'","traceback":null,"description":null,"code":null,"suggestion":null}
}`

Data that i am parsing: [ { "type": "reel", "total_likes": 340, "total_shares": 110, "total_comments": 95 }, { "type": "carousel", "total_likes": 120, "total_shares": 30, "total_comments": 20 }, { "type": "static", "total_likes": 490, "total_shares": 60, "total_comments": 15 } ]

JS Code: import axios from "axios";
import dotenv from "dotenv";

dotenv.config({
path: "../../.env",
});

export const runLangFlow = async () => {
const url =
"https://api.langflow.astra.datastax.com/lf/6f5d319d-0f28-4d22-bbee-a976d981680d/api/v1/run/f268c20a-a94f-484a-96d9-23b8f115c0ac?stream=false";
const token = process.env.LANGFLOW_TOKEN;
const inputValue = "static";
const payload = {
input_value: inputValue,
output_type: "chat",
input_type: "chat",
tweaks: {
"APIRequest-NPp4t": {},
"ParseData-qPubJ": {
sep: "\n",
template: Reel Like: {result[0][total_likes]}\n Reel Shares: {result[0][total_shares]}\n Reel Comments: {result[0][total_comments]}\n Carousel Like: {result[1][total_likes]}\n Carousel Shares: {result[1][total_shares]}\n Carousel Comments: {result[1][total_comments]}\n Static Like: {result[2][total_likes]}\n Static Shares: {result[2][total_shares]}\n Static Comments: {result[2][total_comments]}\n
},
"Prompt-r82pU": {},
"ChatInput-AwsLA": {},
"ChatOutput-pqVuM": {},
"GroqModel-vKAET": {},
},
};

try {
const response = await axios.post(url, payload, {
headers: {
"Content-Type": "application/json",
Authorization: Bearer ${token},
},
});

return response.data.outputs[0].outputs[0].results.message.text;

} catch (error) {
console.error("Error:", error.response?.data || error.message);
throw new Error("Failed to fetch data from LangFlow API");
}
};

[dosubot[bot]]

The error you're encountering, "string indices must be integers, not 'str'," suggests that the template in your ParseData component is incorrectly trying to access elements of a string as if it were a list or dictionary. This typically happens when the data structure being accessed does not match the expected format.

In your template, you're using expressions like {result[0][total_likes]}. This implies that result should be a list of dictionaries. However, the error indicates that result might be a string or another type that doesn't support this kind of indexing.

Here are a few steps to troubleshoot and resolve the issue:

1. Check the Data Structure: Ensure that the data being passed to the ParseData component is indeed a list of dictionaries. The data you provided seems correct, but verify that it is being sent correctly in the API call.

2. Template Syntax: Double-check the template syntax. Ensure that the placeholders in the template match the keys in your data objects. For example, if result is a list of dictionaries, {result[0][total_likes]} should work, provided result is structured as expected.

3. Debugging: Add logging or debugging statements to inspect the actual structure of result at runtime. This can help confirm whether the data is being transformed or misinterpreted somewhere in the flow.

4. API Payload: Ensure that the payload sent to the API is correctly formatted and that the tweaks object is being processed as expected by the LangFlow API.

By verifying these aspects, you should be able to identify and correct the mismatch causing the error.

To continue talking to Dosu, mention @dosu.

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[ayushk-singh]

I have checked all the things that you stated still same issue using same parse template i can parse data in langflow ui but not while calling from js api