# Unexpected token s in JSON at position 0

**URL:** https://discourse.nodered.org/t/unexpected-token-s-in-json-at-position-0/9309
**Category:** General
**Created:** [22 March 2019 11:04 UTC](https://discourse.nodered.org/t/unexpected-token-s-in-json-at-position-0/9309 "2019-03-22T11:04:27Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![gaara7271](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/gaara7271/32/7474_2.png) [@gaara7271](https://discourse.nodered.org/u/gaara7271)
#### Post date: [22 March 2019 11:04 UTC](https://discourse.nodered.org/t/unexpected-token-s-in-json-at-position-0/9309/1 "2019-03-22T11:04:27Z")

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![53970439_2283046125298464_6287643228682321920_n](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/d/ddd9d5c36510f3efc452d3e4cc95a639ece30c45.jpeg) ![54516065_297523257593314_8031559457353760768_n](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/5/5581e4d477ac74e5bd2847c21354552dd50c7481.jpeg) ![54798846_426004277964173_3083117946738835456_n](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/0/04a96b7e778328c3fa0cec99289c50263cdb1c4d.jpeg) ![55505652_1760811327352781_4479776272708272128_n](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/b/bf009bba11ecb420294d65518130f6245a14a582.jpeg) ![55547051_2172381369508526_3456132355998089216_n](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/4/49c89b5783710204114a14304d5225a9bde0b3ad.jpeg) ![55604888_2245989398975557_5248119533683605504_n](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/e/eeb74ee882883acc3974599be22d2698996a86a8.jpeg)  
hello everyone, i want get output a object, it was right but had a error.  
"Unexpected token s in JSON at position 0"  
Could anyone help me with that issue, some suggestion how to find the reason?

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### Author: ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [22 March 2019 11:28 UTC](https://discourse.nodered.org/t/unexpected-token-s-in-json-at-position-0/9309/2 "2019-03-22T11:28:08Z")

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You are sending a string `"so1"` to a JSON node. That node will convert a JSON string to a javascript object, or a javascript object to a JSON string. The string you are giving it is not valid json.  
What are you wanting to do with the string?

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### Author: ![gaara7271](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/gaara7271/32/7474_2.png) [@gaara7271](https://discourse.nodered.org/u/gaara7271)
#### Post date: [23 March 2019 02:01 UTC](https://discourse.nodered.org/t/unexpected-token-s-in-json-at-position-0/9309/3 "2019-03-23T02:01:55Z")

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How to stop string "so1" send through mqtt node

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### Author: ![gaara7271](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/gaara7271/32/7474_2.png) [@gaara7271](https://discourse.nodered.org/u/gaara7271)
#### Post date: [23 March 2019 02:19 UTC](https://discourse.nodered.org/t/unexpected-token-s-in-json-at-position-0/9309/4 "2019-03-23T02:19:40Z")

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i solved, i have 2 topic: checkID1 and checkID2, It looks like the name is almost the same, so error, i changed name, i success 😄