Code
T0019 secret-missing
A secret that is needed has no value, or a sealed column was read or written with no key at hand.
Details
A column that states sealed: true is stored encrypted, each value by itself, under the key of the secrets. With no key at hand a read and a write of such a column fail with this code, which names the table and the column. A row whose sealed columns hold nothing needs no key.
The fix
Give the engine the key of the secrets: tent secrets key makes one. On a server the key stands in TENT_SECRET_KEY.