MYSQL - Unknown collation: utf8mb4_unicode_520_ci
MySql error - Unknown collation: utf8mb4_unicode_520_ci
Error is caused because of the conflict of different versions of MySQL Best option would be to update MySQL to match between environments but something we don't have that option.
Quick fix is to replace the collation using the command below
sed -i 's/utf8mb4_unicode_520_ci/utf8mb4_unicode_ci/g' file.sql
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