FileUpload refreshed once it hit 100% on modal, addMedia not respecting it model_type

Hi I am having an issue where the FileUpload which is on modal slideOver Form refreshing on first time once the upload hit 100%. After it refresh, I was able to choose the file again and upload went on without refreshing on second try. Another issue is I am attaching the media to Application model through Offer model relationship but on submit, it giving me Call to undefined method App\Models\Offer::getMedia() error. Querying the Application::where('id', 'record->application_id') also give the same error. Putting HasMedia and InteractsWithMedia on Offer modal works but the model_type was entered as Offer instead of Application inside the database. Sample code attached as images- Thank you for any helps.