fixed bugs and updated to version 0.93:

src/netbox_slm/migrations/0002_alter_softwareproduct_manufacturer.py

@@ -0,0 +1,20 @@
+# Generated by Django 3.2.9 on 2022-01-24 08:05
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('dcim', '0133_port_colors'),
+        ('netbox_slm', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='softwareproduct',
+            name='manufacturer',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.PROTECT, related_name='software_products', to='dcim.manufacturer'),
+        ),
+    ]