nginx "content_by_lua_block" directive is not allowed here

nginx: [emerg] "content_by_lua_block" directive is not allowed here

stream {
    # define a TCP server listening on the port 1234:
    server {
        listen 1234;
        content_by_lua_block {
            ngx.say("Hello, Lua!")
        }
    }
}

nginx -v
nginx version: nginx/1.22.0

nginx -V
--prefix=/usr/local/nginx --with-pcre=../pcre-8.45 --with-zlib=../zlib-1.3 --with-openssl=../openssl-1.1.1q --pid-path=/data/logs/nginx/nginx.pid --error-log-path=/data/logs/nginx/error.log --http-log-path=/data/logs/nginx/access.log --lock-path=/var/run/nginx.lock --modules-path=/usr/local/nginx/modules --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --with-threads --with-http_sub_module --with-http_v2_module --with-http_auth_request_module --with-http_realip_module --with-http_secure_link_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_ssl_module --with-http_slice_module --with-http_stub_status_module --with-http_dav_module --with-http_flv_module --with-http_mp4_module --with-stream --with-stream_realip_module --with-stream_ssl_module --with-stream_ssl_preread_module --with-mail --with-mail_ssl_module --with-http_addition_module --with-http_random_index_module --with-compat --with-stream --with-file-aio --with-cc-opt='-Os -fomit-frame-pointer -g' --with-ld-opt=-Wl,-rpath,/usr/local/luajit/lib,--as-needed,-O1,--sort-common --add-module=/usr/local/src/ngx_devel_kit-0.3.1 --add-module=/usr/local/src/lua-nginx-module-0.10.21 --add-dynamic-module=/usr/local/src/echo-nginx-module-0.62 --add-dynamic-module=/usr/local/src/stream-lua-nginx-module-0.0.14rc1

when in http is ok

        location /lua {
            default_type 'text/plain';

            content_by_lua 'ngx.say("hello, lua")';
        }

Reproduce the reported stream configuration with nginx 1.22.0 and the listed lua-nginx-module and stream-lua-nginx-module versions, then compare it with the working http configuration. Trace how content_by_lua_block is registered and validated for stream servers; done means the intended stream configuration passes validation and has coverage for the behavior.