Error running syncdb with MySQL utf8mb4 charset

[fletchowns]

The docs mention the 767 byte error, but the recommendation of SOCIAL_AUTH_UID_LENGTH = 223 does not work for the utf8mb4 character set. A value of 191 was the largest I could use to get around the 767 byte error.

[omab]

The size depends a lot of the type using, so 191 is in your case.