the laster version run application-go/assetTransfer.go error

[larryhq]

I download the main branch code to localhost, when I run fabric-samples/asset-transfer-basic/application-go/assetTransfer.go traceback error
[fabsdk/util] 2023/07/27 07:58:28 UTC - lazyref.(*Reference).refreshValue -> WARN Error - initializer returned error: load MSPs from config failed: configure MSP failed: sanitizeCert failed the supplied identity is not valid: x509: certificate signed by unknown authority. Will retry again later
2023/07/27 15:58:28 Failed to Submit transaction: Failed to submit: Discovery status Code: (11) UNKNOWN. Description: error getting endorsers: no endorsement combination can be satisfied
exit status 1
my golang version is go1.20.6
run pass through gateway is ok!
why this? Is this code BUG?

[larryhq]

my fabric-ca version 1.5.6
fabric-linux version 2.5.3