解决了，network.json里的main后面的网址改成
"main": { "base_url": "https://qsign.trpgbot.com/" },
就好了。

2025-03-19 13:30:15 I/trpgbot.adapter.ws: 签名服务器连接因 未知原因 已关闭 (关闭码: 1006)
2025-03-19 13:30:15 W/trpgbot.adapter.ws: 等待 5.0 秒后重连 (第 1/5 次)
2025-03-19 13:30:20 I/trpgbot.adapter.ws: 正在重连...
2025-03-19 13:30:24 I/trpgbot.adapter.ws: 已连接到签名服务器
2025-03-19 13:30:26 I/trpgbot.adapter.ws: 签名服务器连接因 用户请求关闭 已关闭 (关闭码: 1000)
2025-03-19 13:32:00 E/MiraiNative: Exception in coroutine Plugin org.itxtech.mirainative of MiraiNative
org.java_websocket.exceptions.WebsocketNotConnectedException
        at trpgbot-1.13.5.mirai2.jar[private]//org.java_websocket.WebSocketImpl.send(WebSocketImpl.java:669)
        at trpgbot-1.13.5.mirai2.jar[private]//org.java_websocket.WebSocketImpl.send(WebSocketImpl.java:645)
        at trpgbot-1.13.5.mirai2.jar[private]//org.java_websocket.client.WebSocketClient.send(WebSocketClient.java:445)
        at trpgbot-1.13.5.mirai2.jar//xyz.cssxsh.mirai.tool.adapters.Client.send(WebSocketClient.kt:81)
        at trpgbot-1.13.5.mirai2.jar//xyz.cssxsh.mirai.tool.adapters.QsignWebSocketAdapter.sign(WebSocketAdapter.kt:66)
        at trpgbot-1.13.5.mirai2.jar//xyz.cssxsh.mirai.tool.adapters.AbstractAdapter.qSecurityGetSign(AbstractAdapter.kt:175)
        at net.mamoe.mirai.internal.network.protocol.packet.OutgoingPacketKt.buildRawUniPacket(OutgoingPacket.kt:139)
        at net.mamoe.mirai.internal.network.protocol.packet.chat.receive.MessageSvcPbSendMsg.createToGroupImpl$mirai_core(MessageSvc.PbSendMsg.kt:744)
        at net.mamoe.mirai.internal.network.protocol.packet.chat.receive.MessageSvc_PbSendMsgKt.createToGroup(MessageSvc.PbSendMsg.kt:585)
        at net.mamoe.mirai.internal.message.protocol.outgoing.GroupMessageProtocolStrategy.createPacketsForGeneralMessage$suspendImpl(MessageProtocolStrategy.kt:150)
        at net.mamoe.mirai.internal.message.protocol.outgoing.GroupMessageProtocolStrategy.createPacketsForGeneralMessage(MessageProtocolStrategy.kt)
        at net.mamoe.mirai.internal.message.protocol.outgoing.GroupMessageProtocolStrategy.createPacketsForGeneralMessage(MessageProtocolStrategy.kt:139)
        at net.mamoe.mirai.internal.message.protocol.impl.GeneralMessageSenderProtocol$GeneralMessageSender.process(GeneralMessageSenderProtocol.kt:66)
        at net.mamoe.mirai.internal.message.protocol.outgoing.OutgoingMessageProcessorAdapter.process(OutgoingMessagePipelineProcessor.kt:26)
        at net.mamoe.mirai.internal.message.protocol.outgoing.OutgoingMessageProcessorAdapter.process(OutgoingMessagePipelineProcessor.kt:20)
        at net.mamoe.mirai.internal.pipeline.AbstractProcessorPipeline.process$suspendImpl(ProcessorPipeline.kt:287)
        at net.mamoe.mirai.internal.pipeline.AbstractProcessorPipeline.process(ProcessorPipeline.kt)
        at net.mamoe.mirai.internal.message.protocol.MessageProtocolFacadeImpl.preprocessAndSendOutgoingImpl(MessageProtocolFacade.kt:364)
        at net.mamoe.mirai.internal.message.protocol.MessageProtocolFacadeImpl.preprocessAndSendOutgoing(MessageProtocolFacade.kt:348)
        at net.mamoe.mirai.internal.message.protocol.MessageProtocolFacade$INSTANCE.preprocessAndSendOutgoing(MessageProtocolFacade.kt)
        at net.mamoe.mirai.internal.contact.AbstractUserKt.sendMessageImpl(AbstractUser.kt:263)
        at net.mamoe.mirai.internal.contact.CommonGroupImpl.sendMessage$suspendImpl(GroupImpl.kt:221)
        at net.mamoe.mirai.internal.contact.CommonGroupImpl.sendMessage(GroupImpl.kt)
        at mirai-native-2.0.5-cp.jar//org.itxtech.mirainative.bridge.MiraiBridge$sendGroupMessage$1$1.invokeSuspend(MiraiBridge.kt:150)
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
        at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
        at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:570)
        at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:750)
        at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:677)
        at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:664)