Golang fatal error:concurrent Map read and map write

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When debugging the program, in order to print the contents of the map, directly using the Seelog method to print the contents of the map to the log, the result appears "concurrent map read and map write" error, causing the program to exit unexpectedly, and then return to normal code after comment. Guess the next is the log print is a write operation, take out the map content is read operation, log record when the lock throws an exception.

The specifics are not studied, mark.