There is no way to upgrade from v1.15 to v1.17 neither to v1.18 it get stucked always on this:
Dashboard error:
Upgrader - e2b4e5cb (task pending).
The PluginMigration task reports there is work to do
I don't know what else to do, i disable the file system attachment plugin, that is the only plugin i have installed and enabled.
I revert all with the bd backup and code backup, i'm glad i follow the instructions to backup all first.
But i don't know why the upgrade it is stucked there