# Error
**URL:** https://forum.shopware.com/t/error/60901
**Category:** Installation / Einstieg
**Created:** [6. August 2019 um 18:12 UTC](https://forum.shopware.com/t/error/60901 "2019-08-06T18:12:08Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@simonm](https://forum.shopware.com/u/simonm)
#### Post date: [6. August 2019 um 18:12 UTC](https://forum.shopware.com/t/error/60901/1 "2019-08-06T18:12:08Z")
Hallo zusammen,
habe jetzt versucht, SW6 zu installieren, bei Schritt 70 von 250 kommt diese Fehlermeldung.
Kann mir jemand sagen, was das für ein Fehler ist?
Error
Received an error message.
**URL:** importDatabase
**Message:** Internal Server Error
Please try to fix this error and restart the update.
Response
```
{"valid":false,"errorMsg":"An exception occurred while executing '\n CREATE TABLE `custom_field` (\n `id` BINARY(16) NOT NULL PRIMARY KEY,\n `name` VARCHAR(255) NOT NULL,\n `type` VARCHAR(255) NOT NULL,\n `config` JSON NULL,\n `active` TINYINT(1) NOT NULL DEFAULT 1,\n `set_id` BINARY(16) NULL,\n `created_at` DATETIME(3) NOT NULL,\n `updated_at` DATETIME(3) NULL,\n CONSTRAINT `uniq.custom_field.name` UNIQUE (`name`),\n CONSTRAINT `json.custom_field.config` CHECK(JSON\_VALID(`config`)),\n CONSTRAINT `fk.custom_field.set_id` FOREIGN KEY (set\_id)\n REFERENCES `custom_field_set` (id) ON UPDATE CASCADE ON DELETE CASCADE\n ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4\_unicode\_ci;\n ':\n\nSQLSTATE[HY000]: General error: 1215 Cannot add foreign key constraint"}
```
Vielen Dank
---
### Author:  [@Moritz\_Naczenski](https://forum.shopware.com/u/Moritz_Naczenski)
#### Post date: [6. August 2019 um 18:20 UTC](https://forum.shopware.com/t/error/60901/2 "2019-08-06T18:20:40Z")
Welche Datenbank Version hast du im Einsatz?
Es muss mindestens MySQL 5.7 oder MariaDB 10.3 sein.
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### Author:  [@simonm](https://forum.shopware.com/u/simonm)
#### Post date: [6. August 2019 um 19:42 UTC](https://forum.shopware.com/t/error/60901/3 "2019-08-06T19:42:53Z")
MySQL 5.7 ich weiß nicht das beste.