How To Fix “Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client”?
Are you having problems with the issue “Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client“? How to fix it? In today’s article, I will provide solutions for you to solve the issues. Please follow the below steps to get the problem resolved now
How did “Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client” occur?
Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client
When you work with Nodejs, you may get the issue Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client. Don’t worry, we are here to provide you solutions in order to resolve your problem.
How to fix “Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client”?
To Solve Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the cpent In Another Scenario I am Facing error While UsingsendStatus() in My Code. You can usestatus() instead ofsendStatus(). You can see the solution in this: return res.status(200).json
Solution 1: Use a return statement
This error can be solved by using the return statement. This error occurs because your res.status(400).json function is running and it isn’t going to stop. This is why you are experiencing this error.
When a return statement is used in a function body, the execution of the function is stopped. If specified, a given value is returned to the function caller.
So that Just add return statement in your request handler function Just like This.
app.post("/login", (req, res) => {
if (!req.body.username) {
return res.status(400).json({
status_code: 0,
error_msg: "Require Params Missing",
});
}
res.status(200).json({
status_code: 1,
data: req.body,
});
});
Now, your error must be fixed
Solution 2: You can use sendStatus() rather than status()
In another scenario, I am facing an error while usingsendStatus() within my code.
if (!req.body.username) {
return res.sendStatus(200).json({ // Error ERR_HTTP_HEADERS_SENT
status_code: 0,
error_msg: "Require Params Missing",
});
}
This means that you can use status() instead of sendStatus(). Just like this.
if (!req.body.username) {
return res.status(200).json({ // Worked
status_code: 0,
error_msg: "Require Params Missing",
});
}
Your problem now must be solved.
Final words
The above are useful solutions that can help you fix “Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client” problem, if you can’t solve it well. Please leave a message.