Error compiling to Board Arduino/Genuino MKR1000

I opened an example for the Arduino/Genuino MKR1000 which should connect with Telegramm to let me edit the keyboard.

I just defined SECRET_SSID, SECRET_PASS and SECRET_BOT_TOKEN in arduino_secrets.h and changed nothing else about the code but still I am getting the Error:

"Arduino: 1.8.9 (Windows 7), Board: "Arduino/Genuino MKR1000"

FindFirstFile C:\Users\mr\Documents\Arduino\Custom_Keyboard.ino\Custom_Keyboard.ino.ino: Das System kann die angegebene Datei nicht finden.

Error compiling for board Arduino/Genuino MKR1000.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences."


The Code:

/*
EchoBot

This example shows how to program a Telegram Bot
that echoes your messages using a custom keyboard.

For a step-by-step tutorial visit:
https://create.arduino.cc/projecthub/Arduino_Genuino/telegram-bot-library-ced4d4

In oreder to make the bot more reliable in the long run we suggest using a watchdog
The Adafruit_SleepyDog is a handy library that will reset the board if something goes wrong

Updated 29 May 2016
by Tommaso Laterza
Updated 13 February 2018
by Tommaso Laterza

This example code is in the public domain.

*/

#include "arduino_secrets.h"
#include <WiFi101.h>
#include <SPI.h>
#include <TelegramBot.h>

// Initialize Wifi connection to the router
char ssid[] = SECRET_SSID; // your network SSID (name)
char pass[] = SECRET_PASS; // your network key

// Initialize Telegram BOT
const char BotToken[] = SECRET_BOT_TOKEN;

WiFiSSLClient client;
TelegramBot bot (BotToken, client);
TelegramKeyboard keyboard_one;

void setup() {

Serial.begin(115200);
while (!Serial) {} // Wait for the Serial monitor to be opened
delay(3000);

// attempt to connect to Wifi network:
Serial.print("Connecting Wifi: ");
Serial.println(ssid);
while (WiFi.begin(ssid, pass) != WL_CONNECTED) {
Serial.print(".");
delay(500);
}
Serial.println("");
Serial.println("WiFi connected");

// define your row's
const char* row_one[] = {"true", "false"};
const char* row_two[] = {"one", "two", "three", "hello!"};

// assing a row to one or more keyboards
// second argument is the length of the row
keyboard_one.addRow(row_one, 2);
keyboard_one.addRow(row_two, 4);
bot.begin();
}

void loop() {

message m = bot.getUpdates(); // Read new messages
if ( m.chat_id != 0 ) { // Checks if there are some updates
Serial.println(m.text);
bot.sendMessage(m.chat_id, m.text, keyboard_one); // Reply to the same chat with the same text
} else {
Serial.println("no new message");
}

delay(2000);
}

newbie to newbie you will get roasted for this. edit your post and use code tags please

Does the error still occur if you save the sketch somewhere outside of C:\Users\mr\Documents?

The compiler seems unable to find the file Custom_Keyboard.ino.ino
Is it possible to have a _ in the name of an ino file?

Yes, _ has always been allowed. In old IDE versions, you couldn't use - but that restriction was dropped.

Have you followed the step-by-step tutorial at: https://create.arduino.cc/projecthub/Arduino_Genuino/telegram-bot-library-ced4d4 as mentioned in the sketch?