Eager Loading BelongsTo Relation Not Working (solved)

Tables:

• projects (id, title, school_id)
• schools (id, school_name)
• counties_projects (pivot)
• counties (id, county_name)
• sites (id, project_id, site_name)

Relations:

Project model

public function school()
  {
    return $this->belongsTo(School::class);
  }

  public function counties()
  {
    return $this->belongsToMany(County::class, 'counties_projects');
  }

  public function sites()
  {
    return $this->hasMany(Site::class);
  }

School model

public function projects()
  {
    return $this->hasMany(Project::class);
  }

County model

public function projects()
  {
    return $this->belongsToMany(Project::class, 'counties_projects');
  }

Site model:

public function project()
  {
      return $this->belongsTo(Project::class);
  }

If I run the following query from the CountiesController, where $county->id is injected via route model binding:

return $county->projects()->with(['school', 'sites'])->get();

Laravel gets both projects and sites just fine, but not school.

The first query looks like this:

select `id`, `project_name`, `description`, `tangible_outcomes`, `department`, `counties_projects`.`county_id` as `pivot_county_id`, `counties_projects`.`project_id` as `pivot_project_id` from `projects` inner join `counties_projects` on `projects`.`id` = `counties_projects`.`project_id` where `counties_projects`.`county_id` = 40 and `status_id` = 3

The query for sites looks like this:

select * from `sites` where `sites`.`project_id` in (5, 8, 11, 23, 24, 25, 30, 39, 44, 45, 49, 55, 69, 73, 82, 88, 94)

The query for eager loading the schools looks like this:

select * from `schools` where 0 = 1

"where 0 = 1"? What's going on with this query? Obviously that's not right.

In sum, eager loading is working with one relation (sites), but not the other (school).

Any ideas or suggestions?