[Solved] MYSQL error 3100:error on observer while running replication hook berfore_commit

The reason for the error:

The transaction size exceeds the database default size.

show global variables like ' %group_replication_transaction_size_limit% ' ;

The general size is 141M (150000000), modified to 2 times

set  global group_replication_transaction_size_limit = 300000000 ;

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