docker - 在本地运行hyperledger composer Playground 会导致错误

Question

我正在研究有关Hyperledger Composer(https://www.ibm.com/developerworks/cloud/library/cl-deploy-interact-extend-local-blockchain-network-with-hyperledger-composer/index.html)的教程。它使用Docker运行Hyperledger Composer Playground的本地版本。

我第一次在localhost 8080上运行它时，它工作正常，但是几天后，但是我运行它，则抛出错误:

TypeError:无法读取未定义的属性“engine”

这是我在命令行上看到的:

[2018-03-16 05:40:53] PM2 log: Launching in no daemon mode
[2018-03-16 05:40:53] PM2 log: Starting execution sequence in -fork mode- for app name:composer-playground id:0
[2018-03-16 05:40:53] PM2 log: App name:composer-playground id:0 online
PlaygroundAPI :createServer() > 8080, false
PlaygroundAPI :createServer() Playground API started on port 8080
PlaygroundAPI :createServer() <
Composer :main() >
PlaygroundAPI :createServer() Client with ID 'zIhEA8HiUwbYafauAAAA' on host '::ffff:172.17.0.1' connected ConnectorServer :constructor() > {"fs":{"constants":{"O_RDONLY":0,"O_WRONLY":1,"O_RDWR":2,"S_IFMT":61440,"S_IFREG":32768,"S_IFDIR":16384,"S_IFCHR":8192,"S_IFBLK":24576,"S_IFIFO":4096,"S_IFLNK":40960,"S_IFSOCK":49152,"O_CREAT":64,"O_EXCL":128,"O_NOCTTY":256,"O_TRUNC":512,"O_APPEND":1024,"O_DIRECTORY":65536,"O_NOATIME":262144,"O_NOFOLLOW":131072,"O_SYNC":1052672,"O_DSYNC":4096,"O_DIRECT":16384,"O_NONBLOCK":2048,"S_IRWXU":448,"S_IRUSR":256,"S_IWUSR":128,"S_IXUSR":64,"S_IRWXG":56,"S_IRGRP":32,"S_IWGRP":16,"S_IXGRP":8,"S_IRWXO":7,"S_IROTH":4,"S_IWOTH":2,"S_IXOTH":1,"F_OK":0,"R_OK":4,"W_OK":2,"X_OK":1,"UV_FS_COPYFILE_EXCL":1,"COPYFILE_EXCL":1},"F_OK":0,"R_OK":4,"W_OK":2,"X_OK":1},"thenifyFs":{"constants":{"O_RDONLY":0,"O_WRONLY":1,"O_RDWR":2,"S_IFMT":61440,"S_IFREG":32768,"S_IFDIR":16384,"S_IFCHR":8192,"S_IFBLK":24576,"S_IFIFO":4096,"S_IFLNK":40960,"S_IFSOCK":49152,"O_CREAT":64,"O_EXCL":128,"O_NOCTTY":256,"O_TRUNC":512,"O_APPEND":1024,"O_DIRECTORY":65536,"O_NOATIME":262144,"O_NOFOLLOW":131072,"O_SYNC":1052672,"O_DSYNC":4096,"O_DIRECT":16384,"O_NONBLOCK":2048,"S_IRWXU":448,"S_IRUSR":256,"S_IWUSR":128,"S_IXUSR":64,"S_IRWXG":56,"S_IRGRP":32,"S_IWGRP":16,"S_IXGRP":8,"S_IRWXO":7,"S_IROTH":4,"S_IWOTH":2,"S_IXOTH":1,"F_OK":0,"R_OK":4,"W_OK":2,"X_OK":1,"UV_FS_COPYFILE_EXCL":1,"COPYFILE_EXCL":1},"F_OK":0,"R_OK":4,"W_OK":2,"X_OK":1},"rimrafOptions":{"constants":{"O_RDONLY":0,"O_WRONLY":1,"O_RDWR":2,"S_IFMT":61440,"S_IFREG":32768,"S_IFDIR":16384,"S_IFCHR":8192,"S_IFBLK":24576,"S_IFIFO":4096,"S_IFLNK":40960,"S_IFSOCK":49152,"O_CREAT":64,"O_EXCL":128,"O_NOCTTY":256,"O_TRUNC":512,"O_APPEND":1024,"O_DIRECTORY":65536,"O_NOATIME":262144,"O_NOFOLLOW":131072,"O_SYNC":1052672,"O_DSYNC":4096,"O_DIRECT":16384,"O_NONBLOCK":2048,"S_IRWXU":448,"S_IRUSR":256,"S_IWUSR":128,"S_IXUSR":64,"S_IRWXG":56,"S_IRGRP":32,"S_IWGRP":16,"S_IXGRP":8,"S_IRWXO":7,"S_IROTH":4,"S_IWOTH":2,"S_IXOTH":1,"F_OK":0,"R_OK":4,"W_OK":2,"X_OK":1,"UV_FS_COPYFILE_EXCL":1,"COPYFILE_EXCL":1},"F_OK":0,"R_OK":4,"W_OK":2,"X_OK":1,"disableGlob":true},"storePath":"/home/composer/.composer/cards"}, {}, [object Object]
ConnectorServer :constructor() <

我正在运行:
Ubuntu 16.04 LTS
Docker版本17.12.1-CE，内部版本7390FC6

有任何想法吗？

Answer 1

相同的问题:/第一次运行良好，但是下次运行时，引擎未定义。有什么办法吗？

编辑:

我设法使其再次起作用，只需使用sudo特权运行composer-playground。那解决了我的问题。希望能帮助到你!