感谢大佬们，修好了
附改完的config.json

{
  "js_optimization_level": -1,
  "mirai_repo": "https://gitee.com/peratx/mirai-repo/raw/master",
  "maven_repo": "https://maven.aliyun.com/repository/public",
  "packages": [
    {
      "id": "net.mamoe:mirai-console",
      "channel": "stable",
      "version": "2.6.7",
      "type": "libs"
    },
    {
      "id": "net.mamoe:mirai-console-terminal",
      "channel": "stable",
      "version": "2.6.7",
      "type": "libs"
    },
    {
      "id": "net.mamoe:mirai-core-all",
      "channel": "stable",
      "version": "2.6.7",
      "type": "libs"
    },
    {
      "id": "net.mamoe:mirai-api-http",
      "channel": "stable",
      "version": "1.10.0",
      "type": "plugins"
    }
  ],
  "disabled_scripts": [],
  "proxy": "",
  "log_level": 0,
  "script_props": {}
}

好家伙强制更新还不能降级

2021-06-20 11:17:15 E/Mirai HTTP API: java.lang.NoSuchMethodError: 'double kotlin.time.DurationKt.toDuration(int, java.util.concurrent.TimeUnit)'
java.lang.NoSuchMethodError: 'double kotlin.time.DurationKt.toDuration(int, java.util.concurrent.TimeUnit)'
        at net.mamoe.mirai.api.http.route.BaseRouteKt$mirai$2.invoke(BaseRoute.kt:48)
        at net.mamoe.mirai.api.http.route.BaseRouteKt$mirai$2.invoke(BaseRoute.kt)
        at io.ktor.features.CORS$Feature.install(CORS.kt:517)
        at io.ktor.features.CORS$Feature.install(CORS.kt:509)
        at io.ktor.application.ApplicationFeatureKt.install(ApplicationFeature.kt:68)
        at net.mamoe.mirai.api.http.route.BaseRouteKt.mirai(BaseRoute.kt:45)
        at net.mamoe.mirai.api.http.MiraiHttpAPIServer$start$2$1$1.invoke(MiraiHttpAPIServer.kt:93)
        at net.mamoe.mirai.api.http.MiraiHttpAPIServer$start$2$1$1.invoke(MiraiHttpAPIServer.kt:29)
        at io.ktor.server.engine.ApplicationEngineEnvironmentReloading.instantiateAndConfigureApplication(ApplicationEngineEnvironmentReloading.kt:303)
        at io.ktor.server.engine.ApplicationEngineEnvironmentReloading.createApplication(ApplicationEngineEnvironmentReloading.kt:138)
        at io.ktor.server.engine.ApplicationEngineEnvironmentReloading.start(ApplicationEngineEnvironmentReloading.kt:270)
        at io.ktor.server.cio.CIOApplicationEngine$serverJob$1$1.invokeSuspend(CIOApplicationEngine.kt:53)
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
        at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
        at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:571)
        at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:750)
        at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:678)
        at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665)