Clean_pvnet Error: task must be specified [How to Solve]

Run clean_Pvnet encountered the following error: task must be specified

I have never encountered such an error report, and Baidu has not found the relevant results. My heart is impatient, which has plagued me for a long time and I have been unable to think of a solution; After line by line debugging, it is found that there is a problem with the configuration. This is the code written by the author when writing the configuration file, and then modify the parameters one by one to solve the problem of error reporting. We hereby bear in mind that if an error is reported, debug to find the problem first

debug found that the task of the configuration parameter is set to null, resulting in an error. Later, it is modified to pvnet, and is also modified

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