https调用espconn_secure_connect时就崩溃了，为什么？

大家好，有用过https的吗？调用espconn_secure_connect 时就崩溃了，这是为什么？？？

QBIQ:qbiq_start_dns
QBIQ: now() = 1541378203, secure buff size = 8192
QBIQ:qbiq_dns_found 64.34.221.164
QBIQ:qbiq_dns_name2 harvest.ubiqweus.com
QBIQ: connect to SSL 443
QBIQ: connection ok
TLS.ca_x509.cer 3d5
the file is a PEM file.
client handshake start.
distinguished names: [RapidSSL RSA CA 2018], [harvest.ubiqweus.com]
before 1541030400, tv_sec 1541378203, after 1572566400
distinguished names: [RapidSSL RSA CA 2018], [RapidSSL RSA CA 2018]
distinguished names: [DigiCert Inc], [DigiCert Inc]
distinguished names: [www.digicert.com], [www.digicert.com]
E:M 528
Fatal exception 29(StoreProhibitedCause):
epc1=0x4000e1b2, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000000, depc=0x00000000
ÿ
ets Jan  8 2013,rst cause:2, boot mode:(3,6)

load 0x40100000, len 2408, room 16
tail 8
chksum 0xe5
load 0x3ffe8000, len 776, room 0
tail 8
chksum 0x84
load 0x3ffe8310, len 632, room 0
tail 8
chksum 0xd8
csum 0xd8


Also is it possible to call system_upgrade_start() over https? I am using port 443 but found no SSL/TLS handshake - it was just sending plain http request.

另外，system_upgrade_start可以使用https吗？我设置了端口为443可是看到未经SSL/TLS握手，设备就直接发http请求了。