Mails etc. in Lead finish

database/migrations/2020_03_11_131408_create_customer_mails_table.php

@@ -21,7 +21,7 @@ class CreateCustomerMailsTable extends Migration
             $table->bigInteger('lead_id')->nullable();
 
             $table->boolean('is_answer')->default(false);
-            $table->unsignedBigInteger('reply_id');
+            $table->unsignedBigInteger('reply_id')->nullable();
 
             $table->string('email', 255);
 

database/migrations/2020_05_15_111351_create_customer_fewo_mails_table.php

@@ -20,7 +20,7 @@ class CreateCustomerFewoMailsTable extends Migration
             $table->unsignedInteger('travel_user_id');
 
             $table->boolean('is_answer')->default(false);
-            $table->unsignedInteger('reply_id');
+            $table->unsignedInteger('reply_id')->nullable();
 
             $table->string('email', 255);
 

database/migrations/2021_05_07_124246_create_lead_mails_table.php

@@ -20,7 +20,7 @@ class CreateLeadMailsTable extends Migration
             $table->bigInteger('customer_id');
 
             $table->boolean('is_answer')->default(false);
-            $table->unsignedBigInteger('reply_id');
+            $table->unsignedBigInteger('reply_id')->nullable();
 
             $table->string('email', 255);
 
@@ -60,7 +60,7 @@ class CreateLeadMailsTable extends Migration
 
             $table->foreign('reply_id')
                 ->references('id')
-                ->on('customer_mails')
+                ->on('lead_mails')
                 ->onDelete('CASCADE');
         });
     }

database/migrations/2021_05_07_124341_create_lead_files_table.php

@@ -16,7 +16,7 @@ class CreateLeadFilesTable extends Migration
         Schema::create('lead_files', function (Blueprint $table) {
             $table->bigIncrements('id');
 
-            $table->bigInteger('lead_id');
+            $table->bigInteger('lead_id')->nullable();
             $table->unsignedBigInteger('lead_mail_id')->nullable();
 
             $table->string('identifier')->index();