In an app in Ionic 3 I have this function validateCupom () which when called sends a GET to, in case it has return 200 (OK), then calls the other function setConfig ().
Belowisthefunctionthatneedstobecalledifthefirstonesucceeds.
Attheend,thecodethatthefunctionSetConfiguration()mustrunintheAPI.
Inthedebugconsoleoftheapplication,itappearsthatthestatusinthevalidateCupomwas200,itmakeschangestodatabasefields,everythingworking,butwhenitarrivestogetintotheConfigurationsetitpopsthiserror.
Dude, you're putting two returns in the same method. The TypeError is in the console.log ().
app.post("/teste", function(req, res) {
var array = [];
try{
res.status(200).send(excecao);
try{
console.log("teste" + array);
}catch (e) {
res.status(200).send(excecao);
}
}catch (excecao) {
res.status(200).send(excecao);
}
});
When it enters the second Try of the code, it falls into the Exception of TypeError and if it passes this TypeError it will enter:
Unhandled rejection Error: Can't set headers after they are sent.
That's probably what's happening.