[Solved] Compilation failed

I've been working with the Web Editor perfectly all day long. But now, for no apparent reason, I get the following error: "Compilation failed. Please report this issue to our Forum."
None of the codes I previously had working perfectly are compiling. What can I do? Is this something common?

Hi @yannlelong,
for which board are you compiling? Can you share the sketch link?
I cannot reproduce the issue in my editor
Thanks

I'm trying to compile for Genuino Mega 2560. But I believe it is one of my own libraries I imported that caused the issue, since deleting it allowed me to compile again...
Sorry for the inconvenience!

Can we test your library? Maybe there's a bug in our compilation API or we can handle better the error

Hi, using the web editor for the first time I also got "Compilation failed. Please report this issue to our Forum" Was uploading to a UNO board a previously running program in Arduino 1.8.0.

I'm new at this web based stuff, trying to build confidence.
Maybe my connection is slow but this all seems to take a very long time, even posting this.
Had to do it 2X. No feed back.

Thank You
Rob

Hi @Honders,
could you share the sketch that fails with us? Just copy paste the url here. Are you using an official UNO?
Thanks!

I was having a problem where the Create editor web page would not load at all this morning, but now it started working. however i am getting a Compilation failed error when truing to compile and upload. Everything was working correctly yesterday afternoon.

Sketch:

Elegoo Uno R3 / Windows 10 home / Firefox 51.0 / Verizon wireless for internet access over USB tethering.

@ dtlight

Change the "r" in the offending line to "R" eg digitalread should be digitalRead

I think it is a typo.
Changed it here and it compiles fine.

@dtlight the error message is measliding, we'll deploy a better error handling as soon as possible

@dtlight the error handling should be clearer now, let us know if you are still experiencing issues

The problem has resolved itself. When it was occurring, there was no activity in the output window. The sketch would save (I have the save when compiling option selected) but it would not give any indication of compiling. This behavior would present itself when I clicked either the 'verify' or the 'upload' buttons.

Having similar issue. Getting a compilation failed message - have triple checked code and nothing is wrong. Anyone found a fix?

Very first time working with Arduino
Keep getting comp failed message.
Anything wrong with this code?
Thx Community.

const int inputPin = A0;

int userInputValue = 0;

void setup() {

pinMode(inputPin, INPUT);

Serial.begin(9600);

}

void loop() {

userInputValue = analogRead(inputPin);

Serial.print("User input: ");

Serial.println(userInputValue);

delay(1000);

}

Same problem here.

First time user trying to use the basic blink example and I'm connected to my board but get the same compilation failure. (and no info copied in verbose log)

Tripping right out of the gate on something apparently

thanks!!

Hello all, I suspect most of you have been affected by a bug we discovered that prevented new user to compile. Please follow the discussion here: Compilation failed. Please report this issue on our Forum - June 2018 - Web Editor - Arduino Forum

Hello,

Compilation worked yesterday, but this morning = surprise. I got a "compilation failed" message when trying to compile.

Any suggestion to resolve this matter would be appreciated.

Important Note : small easy program can still compile...no problems. It appears that programs created in the near past seem to intiate this "compilation failed" message.

Regards,
Hans

Hi,

I have read the last post: Topic: Compilation failed. Please report this issue on our Forum - June 2018 trying to find some help, Compilation failed. Please report this issue on our Forum - June 2018 - Web Editor - Arduino Forum

I have a easy code, which run perfectly in arduino desktop , but i show Compilation failed in Arduino Web
I have a Bord Arduino uno, Ubuntu system, MQ7 sensor

this is the online code

I wil appreciate any help

// Digital pin 9 will be called 'pin8'
int pin9 = 9;
// Analog pin 0 will be called 'sensor'
int sensor = A0;
// Set the initial sensorValue to 0
int sensorValue = 0;

// The setup routine runs once when you press reset
void setup() {
// Initialize the digital pin 8 as an output
 pinMode(pin9, OUTPUT);
// Initialize serial communication at 9600 bits per second
 Serial.begin(9600);
}

// The loop routine runs over and over again forever
void loop() {
// Read the input on analog pin 0 (named 'sensor')
sensorValue = analogRead(sensor);
// Print out the value you read
 Serial.println(sensorValue, DEC);
// If sensorValue is greater than 500
 if (sensorValue > 500) {
// Activate digital output pin 9 - the LED will light up
   digitalWrite(pin9, HIGH);
 }
 else {
// Deactivate digital output pin 9 - the LED will not light up
   digitalWrite(pin9, LOW);
 }
}