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A database query syntax error has occurred. This may indicate a bug in the software. The last attempted database query was:

(SQL query hidden)

from within function "SpecialRecentchangeslinked::doMainQuery". Database returned error "1: Can't create/write to file '/var/tmp/mysql.sxuY0E/#sql_cbe_0.MYI' (Errcode: 28) (localhost)".