After upgrading to v8 and having to migrate the postgres db , I see this error on the server (I was getting a 500 status):
LINE 1: SELECT unnest(dashboards.tags) AS tag, count(1) AS usage_cou…
server_1 | ^
server_1 | HINT: No function matches the given name and argument types. You might need to add explicit type casts.
server_1 | [SQL: 'SELECT unnest(dashboards.tags) AS tag, count(%(count_1)s) AS usage_count \nFROM dashboards \nWHERE dashboards.id I…
The postgres version is 9.6.15 - so it should support this function.