Please describe the problem clearly or no one will be able to get your idea.
look up your code to see if () it is not closed properly
if it is a string, add quotation marks such as
otherwise, remove L directly. There is no long integer in
js. If you want to pass it to the background, write it as the string "123456L". Otherwise, remove L plus "" directly, because if the data is very long, it is safe to use strings
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