Error when upgrading Aurora MySQL from v2 (5.7) to v3 (8.0)

Question

When I try to upgrade Aurora MySQL 5.7 to Aurora MySQL 8.0, I got this pre-check error

>{
   "id":"routinesSyntaxCheck",
   "title":"MySQL 8.0 syntax check for routine-like objects",
   "status":"OK",
   "description":"The following objects did not pass a syntax check with the latest MySQL 8.0 grammar. A common reason is that they reference names that conflict with new reserved keywords. You must update these routine definitions and `quote` any such references before upgrading.",
   "documentationLink":"https://dev.mysql.com/doc/refman/en/keywords.html",
   "detectedProblems":[
      {
         "level":"Error",
         "dbObject":"mysql.flush_rewrite_rules",
         "description":"at line 5,8: unexpected token 'QUERY'"
      }
   ]
}

The routine is owned by rdsadmin, so I cannot touch it. What can I do? When I did a test at the end of May, the upgrade worked perfectly

Answer

Perhaps the same thing is happening with the following.  
I think the solution is to contact AWS support as follows and have the mysql.flush_rewrite_rules procedure removed by the AWS RDS development team.  
https://repost.aws/questions/QU_jfgd2gURk6TzL8JcQCO9Q/error-upgrading-mysql-5-7-to-8-0#ANLOZpV0AWQcusXooIc62zEQ  
> Update: I reached out to AWS Support and they mentioned that the mysql.flush_rewrite_rules procedure had to be dropped by the internal AWS RDS development team. I had them drop the procedure and was able to upgrade the database successfully after that.

Error when upgrading Aurora MySQL from v2 (5.7) to v3 (8.0)

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