I am using laravel 8 for this project , and I am trying to add elements from an array to the database. On each element I test it's existence etc ... But it is failing to add. I tried to add sleep(3) at the end of each loop , so It added only 3 elements and catches an exception. This is my code :

foreach($request as $value){
if (condition1 {
            // post with the same slug already exists

            $ide=Universite::select(something)->get();
            if(condition2)
            {
                $etablissement["adresse_id"]=Universite::select(selection2)->get();
                $etablissement_=Etablissement::create((array)$etablissement); 
                $etablissement_->save();                 
            }
        }   
        else {
            $adress=Adresse::create((array)$adresse);
            $adress->save();
            $university["adresse_id"]=$adress->id;
            $university=Universite::create((array)$universite);
            $university->save();
            $etablissement["universite_id"]=$university->id;
            $etablissement["adresse_id"]=$adress->id;
            $etablissement_=Etablissement::create((array)$etablissement); 
            $etablissement_->save(); 
        }
        if(testing existance)->exists()) {
            $specialite["diplome_id"]=Diplome::select(selection)->get()[0]["id"];
        }
        else {
            //creation 
            $diplome_->save();
            $specialite["diplome_id"]=$diplome_->id; 
        }
        if(condition)->exists()){
            $mention["domaine_id"]=Domaine::select(selection)->get()[0]["id"];    
            if(condition)->get()[0]["id"];
                if(Scondition) {
//element creation 

                }
            }
            else {
//creating things here too 

            }
        }
        else {
            // creation of other things
        }
    }
    return response()->json('Fichier excel importé avec success!',200);

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