Why does Unknown database type jsonb requested occur?

Question

PostgreSQL

I do migrations with jsonb columns
$table->jsonb('properties');
and get:

[Doctrine\DBAL\DBALException]  
Unknown database type jsonb requested, Doctrine\DBAL\Platforms\PostgreSQL92Platform  may not support it.

I didn't find anything intelligible in Google
php 7.0
postgres 9.6
laravel 5.5.4

Answer 1

PostgeSQL 9.2 did not yet have a JSONB type.