I am trying to make a simple data collection with two ESP32. The server uses a BME 280 to formulate data:

/*
ESP32 + BME280
Svarar på fråga om temperatur resp RF
*/
#include <SPI.h>
#include <WiFi.h>
#include <Wire.h>
#include <ESPAsyncWebServer.h>
#include <Adafruit_BME280.h>
#include <Adafruit_Sensor.h>
Adafruit_BME280 bme; // I2C
char ssid[] = "";
char pass[] = "";
AsyncWebServer server(80);
IPAddress local_IP(192, 168, 0, 205); // Suntak UTE
IPAddress gateway(192, 168, 0, 1);
IPAddress subnet(255, 255, 255, 0);
String getAnswer()
{
String temp = "0";
String RH = "0";
String svar;
delay(50);
bme.begin(0x76);
temp = bme.readTemperature();
delay(50);
RH = bme.readHumidity();
svar = temp + ";" + RH;
return svar;
}
void setup() {
Serial.begin(19200); // only for debug
if (!bme.begin(0x76))
{
Serial.println("Could not find a valid BME280 sensor, check wiring!");
while (1);
}
if (!WiFi.config(local_IP, gateway, subnet)) {
Serial.println("STA Failed to configure");
}
WiFi.begin(ssid, pass);
while (WiFi.status() != WL_CONNECTED)
{
// Serial.print(".");
delay(500);
}
//Serial.print("Local IP: "); Serial.println(WiFi.localIP());
// Serial.println("Connected to wifi");
server.on("/GetStatus", HTTP_GET, [](AsyncWebServerRequest * request) {
request->send(200, "text/plain", getAnswer());
});
server.begin();
}
void loop ()
{
}

The client uses HTTPClient to receive:

#include <WiFi.h>
#include <HTTPClient.h>
char ssid[] = "";
char pass[] = "";
IPAddress ip(192, 168, 0, 201); // IP address ofthis client
IPAddress gateway(192, 168, 0, 1); // gateway of your network
IPAddress subnet(255, 255, 255, 0); // subnet mask of your network
void setup() {
Serial.begin(19200);
WiFi.config(ip, gateway, subnet);
WiFi.begin(ssid, pass);
while (WiFi.status() != WL_CONNECTED)
{
//Serial.print(".");
delay(50);
}
Serial.println("Connected to wifi");
}
void loop ()
{
HTTPClient http;

http.begin("http://192.168.0.205/GetStatus");
int httpCode = http.GET();
if (httpCode > 0)
{
String payload = http.getString();
Serial.println(httpCode);
Serial.println(payload);
}
else {
Serial.println("Error on HTTP request");
}
http.end();
delay(10000);
}

The problem is that the client crashes in a inpredictable manner. Sometimes it workes 50 times in a row, sometimes it crashes a couple of times and then works two times and then crashes etc. I can not find a pattern in it. To my mind it looks as some kind of memory problem but I need help to find out what it is.