Error: Invalid magic

[hewm]

Error: Invalid magic
    at parseBoc (/home/ubuntu/deploy-manual/newProject/node_modules/@ton/core/dist/boc/cell/serialization.js:160:15)
    at deserializeBoc (/home/ubuntu/deploy-manual/newProject/node_modules/@ton/core/dist/boc/cell/serialization.js:168:15)
    at Function.fromBoc (/home/ubuntu/deploy-manual/newProject/node_modules/@ton/core/dist/boc/Cell.js:34:51)
    at Function.fromBase64 (/home/ubuntu/deploy-manual/newProject/node_modules/@ton/core/dist/boc/Cell.js:41:27)
    at cellParse (/home/ubuntu/deploy-manual/newProject/node_modules/@ton-api/client/dist/client.js:2388:24)
    at prepareResponseData (/home/ubuntu/deploy-manual/newProject/node_modules/@ton-api/client/dist/client.js:2406:31)
    at /home/ubuntu/deploy-manual/newProject/node_modules/@ton-api/client/dist/client.js:2462:33
    at Array.reduce (<anonymous>)
    at prepareResponseData (/home/ubuntu/deploy-manual/newProject/node_modules/@ton-api/client/dist/client.js:2459:33)
    at /home/ubuntu/deploy-manual/newProject/node_modules/@ton-api/client/dist/client.js:2398:32

[Jobians]

Same error any solution?

[Jobians]

Hi! 👋 Thanks for reporting this.

💥 Error: Invalid magic – What's Going On?

This error usually means you're passing an invalid body in a TON message — likely a string instead of a Cell, which breaks the serialization when building or emulating the message.

---

✅ How to Fix It

If you're using a string comment like this:

body: "Hello TON"  // ❌ This will cause 'Invalid magic'

Change it to:

import { beginCell } from '@ton/core';

body: beginCell().storeStringTail("Hello TON").endCell();  // ✅ Correct

[devmustee]

Make sure your message body is properly serialized as a Cell. use this simple pattern to fix it.

import { beginCell } from '@ton/core';

const body = beginCell()
.storeUint(0x12345678, 32)
.storeStringTail("Your message")
.endCell();

Then pass body into your message function, not the raw string.