Same issue here. Led is flashing (4 long 4 short) indicating a crash in mbed OS.
Output from loglevel 4 is as follows ...
Starting RP2040_WiFiNINA on MBED NANO_RP2040_CONNECT
WiFiManager_NINA_Lite v1.4.0
[WN] Set CustomsStyle to : div,input{padding:5px;font-size:1em;}input{width:95%;}body{text-align: center;}button{background-color:blue;color:white;line-height:2.4rem;font-size:1.2rem;width:100%;}fieldset{border-radius:0.3rem;margin:0px;}
[WN] Set CustomsHeadElement to : html{filter: invert(10%);}
[WN] Set CORS Header to : Your Access-Control-Allow-Origin
[WN] Hostname=RP2040-Master-Controller
LittleFS size (KB) = 64
LittleFS Mount Fail
Formatting...