Error 1273 (HY000): Unknown collation 'utf8mb4_unicode_520_ci

calendar2018-04-08 · 1 min read · mysql mariadb error charset character-set  ·
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Caused by difference in database versions where the latest version you're running does not support 'utf8mb4unicode520_ci'.

Search and replace it from within the dump file with 'utf8mb4_unicode_ci'.

See details in https://www.digitalocean.com/community/questions/error-1273-hy000-at-line-25-unknown-collation-utf8mb4_unicode_520_ci