Basic Infos

• This issue complies with the issue POLICY doc.
• I have read the documentation at readthedocs and the issue is not addressed there.
• I have tested that the issue is present in current master branch (aka latest git).
• I have searched the issue tracker for a similar issue.
• If there is a stack dump, I have decoded it.
• I have filled out all fields below.

Platform

• Hardware: LOLIN D1
• Core Version: 3.1.1
• Development Env: Arduino IDE
• Operating System: Windows

Settings in IDE

• Module: Wemos D1 mini r2
• Flash Mode: other
• Flash Size: Unknown
• lwip Variant: Unknown
• Reset Method: Button on hw
• Flash Frequency: 40Mhz?
• CPU Frequency: 80Mhz?
• Upload Using: SERIAL
• Upload Speed: 115200

Problem Description

When I try to upload it I receive that the parameters are incorrect

MCVE Sketch

void setup() {
  
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(LED_BUILTIN, HIGH);  // turn the LED on (HIGH is the voltage level)
  delay(1000);                      // wait for a second
  digitalWrite(LED_BUILTIN, LOW);   // turn the LED off by making the voltage LOW
  delay(1000);                      // wait for a second
}

Debug Messages

fork/exec C:\Users\Admin\AppData\Local\Arduino15\packages\esp8266\tools\python3\3.7.2-post1/python3.exe: The parameter is incorrect.

Compilation error: fork/exec C:\Users\Admin\AppData\Local\Arduino15\packages\esp8266\tools\python3\3.7.2-post1/python3.exe: The parameter is incorrect.