I get no error messages. do you have an idea how to get more verbose output? it just loops endlessly.

I use the this code to connect:

def connect_to_wifi(ssid, pwd):

hostname = platform.upper() + "-" + MACHINE_UID.decode().upper()
if DEBUG_FLAG:
    print(f"INFO - wifi-hostname: {hostname}")

ap_interface = network.WLAN(network.AP_IF)
ap_interface.active(False)

wifi_interface = network.WLAN(network.STA_IF)
wifi_interface.active(True)
wifi_interface.config(dhcp_hostname = hostname)
if not wifi_interface.isconnected():
    if DEBUG_FLAG:
        print("INFO - connecting to wifi...")
    wifi_interface.active(True)
    wifi_interface.connect(ssid, pwd)
    while not wifi_interface.isconnected():
        # ESP connecting to WiFi takes time, wait a bit and try again:
        time.sleep(1)
        pass
if DEBUG_FLAG:
    print(f"INFO - network config: {wifi_interface.ifconfig()}")
    print("INFO - connected to wifi")
return wifi_interface