No suitable request converter found for a @RequestObject 'List'

[1450793561]

skywalking collects js and prompts a 400 error when the page refreshes or leaves in skywalking version 9.7.0 and skywalking-client-js version last.

The oap server displays the following error:

skywalking-oap    | 	at java.lang.Thread.run(Unknown Source) [?:?]
skywalking-oap    | 2023-12-16 12:42:13,093 com.linecorp.armeria.server.logging.LoggingService 156 [armeria-eventloop-epoll-5-13] WARN  [] - [sreqId=22b824ec, chanId=cbf8b9b5, raddr=10.10.137.229:55808, laddr=172.18.0.3:12800][h1c://bbd488b15032/browser/errorLogs#POST] Response: {startTime=2023-12-16T04:42:13.093Z(1702701733093050), length=37B, duration=165µs(165180ns), totalDuration=425µs(425950ns), cause=java.lang.IllegalArgumentException: No suitable request converter found for a @RequestObject 'List', headers=[:status=400, content-type=text/plain; charset=utf-8, content-length=37, server=Armeria/1.25.0, date=Sat, 16 Dec 2023 04:42:13 GMT]}
skywalking-oap    | java.lang.IllegalArgumentException: No suitable request converter found for a @RequestObject 'List'
skywalking-oap    | 	at com.linecorp.armeria.internal.server.annotation.AnnotatedValueResolver.lambda$resolver$23(AnnotatedValueResolver.java:805) ~[armeria-1.25.0.jar:?]
skywalking-oap    | 	at com.linecorp.armeria.internal.server.annotation.AnnotatedValueResolver.resolve(AnnotatedValueResolver.java:1013) ~[armeria-1.25.0.jar:?]
skywalking-oap    | 	at com.linecorp.armeria.internal.server.annotation.AnnotatedValueResolver.lambda$toArguments$1(AnnotatedValueResolver.java:163) ~[armeria-1.25.0.jar:?]
skywalking-oap    | 	at java.util.stream.ReferencePipeline$3$1.accept(Unknown Source) ~[?:?]
skywalking-oap    | 	at java.util.Collections$2.tryAdvance(Unknown Source) ~[?:?]
skywalking-oap    | 	at java.util.Collections$2.forEachRemaining(Unknown Source) ~[?:?]
skywalking-oap    | 	at java.util.stream.AbstractPipeline.copyInto(Unknown Source) ~[?:?]
skywalking-oap    | 	at java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source) ~[?:?]

The front end is by requesting the nginx domain name, nginx proxy oap service port 12800, nginx configuration is as follows:

upstream skp {
	server 10.10.90.226:12800;
}
server {
    listen       80;
    listen       443;
    server_name  uatxxxxx.abcc.com;
    ssl_certificate   /FullSSL.crt;
    ssl_certificate_key  /SSL.key;
    ssl_session_timeout 5m;
    ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:HIGH:!aNULL:!MD5:!RC4:!DHE;
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_prefer_server_ciphers on;
    large_client_header_buffers 4 32k;
    client_header_buffer_size 32k;
    client_header_timeout 120s;
    client_body_timeout 120s;
    client_max_body_size 500m;
    add_header 'Access-Control-Allow-Origin' $allow_origin;
    add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
    add_header 'Access-Control-Allow-Headers' '*';
    add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
    #add_header Content-Type "application/json";
    proxy_set_header content-type "application/json";
    if ($request_method = 'OPTIONS') {
        return 204;
    }
location / {
    proxy_set_header Upgrade $http_upgrade;
    add_header Access-Control-Allow-Headers 'sw8';
    proxy_pass http://sky;

}
}

Why is this happening? Looking at the nginx log, you can see that some reports are 200 and others are 400 errors

nginx error log