Azkaban上传项目提示错误

错误提示：

Validator Directory Flow reports errors:

Error loading flow yaml file basic.flow:while scanning for the next token found character ‘\t(TAB)’ that cannot start any token. (Do not use \t(TAB) for indentation) in ‘reader’, line 18, column 1: ^

basic.flow

最终解决，重新打包上传，通过。