ZWES1606W Failed to get JWK. rc=HTTP response error - invalid JSON (3), rsn=Invalid port (3)

[Tarfiz]

When use ZOWE V3.= receive those error messages:

ZWES1014I ZIS status - 'Ok' (name='ZWESIS_SYT ', cmsRC='0', description='Ok', clientVersion='2')
error parsing JSON response
error parsing JSON response
error parsing JSON response
error parsing JSON response
error parsing JSON response
error parsing JSON response
error parsing JSON response
ZWES1606W Failed to get JWK. rc=HTTP response error - invalid JSON (3), rsn=Invalid port (3). Retry in 10 seconds
error parsing JSON response
JWK doesn't contain key
ZWES1602W JWK is in unrecognized format
ZWES1605W Server will not accept JWT

Describe your environment

• Zowe version number 3.0.0 install method SMPE
• java 17.0 64
• Node.js node-v18.14.2
• z/OS 2.5
• z/OSMF 2.5.0/wlp-1.0.87.cl240320240311-1901) on IBM J9 VM, version 8.0.8.26 - pmz6480sr8fp26-20240529_01(SR8 FP26)

[1000TurquoisePogs]

@Tarfiz I moved this to the ZSS repo since the errors are from ZSS, however, what it appears to be saying is that the server ZSS needs to contact (APIML Gateway) is returning something thats not JSON, and then ZSS does not like that.
So, I would first check - do the job logs show that the gateway is healthy? Can you get to it in your browser? Can you log into the API catalog? ZSS may just be a victim of the status of the gateway.