General error: 1366 Incorrect string value: '\xE2\x80\x8B</p...' for column 'content' at row 1 code example
Example: Mysql2::Error: Incorrect string value: '\xE2\x80\x8B
ALTER TABLE your_database_name.your_table CONVERT TO CHARACTER SET utf8
ALTER TABLE your_database_name.your_table CONVERT TO CHARACTER SET utf8