Could anyone tell why the sql can't execute smoothly? for e.g, select

Could anyone tell why the sql can't execute smoothly?
for e.g, select concat(a,b) as test from tbtest? a, b are the columns in table tbtest.
This sql can execute smoothly before the upgrade to 6.7. There always an error message : There was a problem during the validation of the SQL statement with the database

The database returned ARV's that may not be supported. Message: test


Thank you so much!...

OriginalPostID-43209

OriginalPostID-43209

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