the miner request fail

[tanggen]

when i begin to miner,i got error like this :
root@iZwz98rploa4dqygcfzc7sZ:/usr/local/mvc# /usr/local/mvc/mine/minerd -a sha256d -o 127.0.0.1:9882 -O xxx:xx--coinbase-addr=xxxxx
[2024-01-05 10:27:46] Binding thread 0 to cpu 0
[2024-01-05 10:27:46] Binding thread 2 to cpu 2
[2024-01-05 10:27:46] 4 miner threads started, using 'sha256d' algorithm.
[2024-01-05 10:27:46] Binding thread 3 to cpu 3
[2024-01-05 10:27:46] Binding thread 1 to cpu 1
[2024-01-05 10:27:46] HTTP request failed: The requested URL returned error: 500 Internal Server Error
[2024-01-05 10:27:46] json_rpc_call failed, retry after 30 seconds
[2024-01-05 10:28:16] HTTP request failed: The requested URL returned error: 500 Internal Server Error