Can't subscribe user to plan

[Yahav]

When executing the following code:
$user = Auth::user(); $plan = Plan::find(1); $user->newSubscription('Free', $plan)->create();

I'm getting the following errors:
Illuminate \ Database \ QueryException (22007) SQLSTATE[22007]: Invalid datetime format: 1292 Incorrect datetime value: '2117-03-21 15:18:06' for column 'ends_at' at row 1 (SQL: insert into plan_subscriptions (plan_id, trial_ends_at, name, subscribable_id, subscribable_type, starts_at, ends_at, updated_at, created_at) values (1, , Free, 1, App\Models\User, 2018-03-21 15:18:06, 2117-03-21 15:18:06, 2018-03-21 15:18:06, 2018-03-21 15:18:06))

[Yahav]

Found the error, i set the plan to:

'interval' => 'year',
'interval_count' => 99,

which caused this issue.
changed it to 20 and it works

EDIT:
didn't solved the issue apparently:

SQLSTATE[22007]: Invalid datetime format: 1292 Incorrect datetime value: '2038-03-26 08:00:31' for column 'ends_at' at row 1 (SQL: insert into plan_subscriptions (plan_id, trial_ends_at, name, subscribable_id, subscribable_type, starts_at, ends_at, updated_at, created_at) values (6, , Free, 1, App\Models\User, 2018-03-26 08:00:31, 2038-03-26 08:00:31, 2018-03-26 08:00:31, 2018-03-26 08:00:31))

EDIT:
So, setting it to 3 years did solve the issue, this whole thing is an extension of the following:
#32

This can be closed.