{"record":{"id":"d2d4b8b3b9cf19c6","repo":"MuntashirAkon/AppManager","slug":"error-could-not-start-local-server-s-n","errorCode":null,"errorMessage":"Error! Could not start local server: %s\\n","messagePattern":"Error! Could not start local server: (.+?)\\\\n","errorType":"console","errorClass":null,"httpStatus":null,"severity":"error","filePath":"app/src/main/cpp/run_server.c","lineNumber":269,"sourceCode":"        exit(1);\n    }\n\n    // Detach from shell\n    int null_fd = open(\"/dev/null\", O_RDWR | O_CLOEXEC);\n    if (null_fd >= 0) {\n        dup2(null_fd, STDIN_FILENO);\n        dup2(null_fd, STDOUT_FILENO);\n        dup2(null_fd, STDERR_FILENO);\n        if (null_fd > STDERR_FILENO) {\n            close(null_fd);\n        }\n    }\n\n    // Execute local server\n    execv(\"/system/bin/app_process\", exec_argv);\n\n    // If execv returns, an error occurred\n    fprintf(stderr, \"Error! Could not start local server: %s\\n\", strerror(errno));\n\n    // Cleanup\n    unlink(exec_jar_path);\n    unlink(main_jar_path);\n    free(exec_argv);\n    exit(1);\n}\n","sourceCodeStart":251,"sourceCodeEnd":277,"githubUrl":"https://github.com/MuntashirAkon/AppManager/blob/0152f468fc9463ee02dc2ca83f6fe4989a2c4ca5/app/src/main/cpp/run_server.c#L251-L277","documentation":"execv(\"/system/bin/app_process\", exec_argv) returned in the forked child, which only happens when the exec itself failed — e.g. app_process is missing, lacks the execute bit, or the argument list is invalid. The child reports errno, unlinks both copied jars, and exits, so the background server never starts.","triggerScenarios":"Thrown at app/src/main/cpp/run_server.c:269 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Verify /system/bin/app_process exists and is executable on the target device","Check errno (ENOENT vs EACCES vs E2BIG) to pinpoint the cause","Ensure the CLASSPATH jar and JAR_MAIN_CLASS are valid for the exec'd runtime","Fall back to an alternative server-start mechanism (e.g. app_process64 or a shell wrapper)"],"exampleFix":null,"handlingStrategy":"fallback","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"0152f468fc9463ee02dc2ca83f6fe4989a2c4ca5","analyzedAt":"2026-09-12T14:03:37.243Z","contentChangedAt":"2026-09-12T14:03:37.243Z","schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}