Web access between Multi archives

[ychyss]

Describe the bug
I follow this guide to config two archive access in web ui: https://github.com/dcm4che/dcm4chee-arc-light/wiki/Accessing-Multiple-Own-Archive-Instances.

but got an unknown error in red message dialog.

To Reproduce
Steps to reproduce the behavior:

1. cloned the device config to dcm4chee-arc-2, using the suffix ‘*-2’
2. add 'http' network connection
3. set web application 'DCM4CHEE-2'. check box 'http' in Web Application Network Connection and confirm Web Service Path
4. go to navigation->studies, select web application 'DCM4CHEE-2', then got an 'unknown error'.

Expected behavior
it should show the other archive(DCM4CHEE-2) studies.

Desktop (please complete the following information):

• OS: [k8s 1.23.7]
• Browser [firefox]
• Version [5.29.2]

Additional context
I deploy two archives in k8s cluster.
I have checked the AE list in Configuration, echo from AS_RECEIVED to DCM4CHEE-2 works well.
I have checked the url in F12 console window, 'http:arc.pacs-2:8080/dcm4chee-arc/aets/DCM4CHEE-2/rs/studies'.
I know this url is right. I enter the container, and use 'curl' command ,I got this:

# curl http://arc.pacs-2:8080/dcm4chee-arc/aets/DCM4CHEE-2/rs/studies?limit=21&offset=0
# [{"00080005":{"vr":"CS"},"00080020":{"vr":"DA","Value":["20050101"]},"00080030":{"vr":"TM","Value":["010100.000000"]},"00080050":{"vr":"SH","Value":["1"]},"00080054":{"vr":"AE","Value":["DCM4CHEE-2"]},"00080056":{"vr":"CS","Value":["ONLINE"]},"00080061":{"vr":"CS","Value":["CT"]},"00080090":{"vr":"PN","Value":[{"Alphabetic":"Unknown"}]},"00080201":{"vr":"SH"},"00081190":{"vr":"UR","Value":["http://arc.pacs-2:8080/dcm4chee-arc/aets/DCM4CHEE-2/rs/studies/1.2.826.0.1.3680043.2.1125.1.75064541463040.2005072610384286421"]},"00100010":{"vr":"PN","Value":[{"Alphabetic":"Eve"}]},"00100020":{"vr":"LO","Value":["000-000-001"]},"00100030":{"vr":"DA","Value":["20050101"]},"00100040":{"vr":"CS","Value":["F"]},"0020000D":{"vr":"UI","Value":["1.2.826.0.1.3680043.2.1125.1.75064541463040.2005072610384286421"]},"00200010":{"vr":"SH","Value":["1"]},"00201206":{"vr":"IS","Value":["1"]},"00201208":{"vr":"IS","Value":["150"]}}]

I have checekd the source code, the error should come from org.dcm4chee.arc.qido.QidoRS.java, method 'search'.
But i dont know what kind of error is.