Ssl_verification not working

I have a Springboot project that used HTTPS and generated a self signed certificate in Java, but encountered an error using Coolabora

00A7EF652E7F0000:error:0A000416:SSL routines:ssl3_read_bytes:sslv3 alert certificate unknown:ssl/record/rec_layer_s3.c:1590:SSL alert number 46
coolwsd[10324]: wsd-10324-10404 2024-03-26 17:04:40.778333 +0800 [ websrv_poll ] ERR #18: Error while handling poll at 0 in websrv_poll: #18 (handshake): unknown. BIO error: 1
coolwsd[10324]: wsd-10324-10653 2024-03-26 17:04:40.777159 +0800 [ docbroker_002 ] WRN ClientSession must be known| wsd/DocumentBroker.cpp:3647
Mar 26 17:04:40 120-124 coolwsd[10324]: wsd-10324-10653 2024-03-26 17:04:40.776995 +0800 [ docbroker_002 ] ERR Storage error while starting session on https%3

I have set the properties
<ssl_verification desc=“Enable or disable SSL verification. You may have to disable it in test environments with self-signed certificates.” type=“string” default=“true”>false</ssl_verification>

But it doesn’t seem to have any effect