Refreshing keypool after importing a dump file fails

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After importing a dumpfile, the keypool size is 0 (zero)

running keypoolrefill results in error
keypoolrefill 10 error code: -4 error message: Error refreshing keypool.

A workaround
use the upgradewallet command
It should respond with wallet is already latest version
follow this with
keypoolrefill
And it should correctly set the keypool