diff --git a/migrations/Version20221114193325.php b/migrations/Version20221114193325.php
index 4a34d964..f09c9875 100644
--- a/migrations/Version20221114193325.php
+++ b/migrations/Version20221114193325.php
@@ -70,13 +70,27 @@ final class Version20221114193325 extends AbstractMultiPlatformMigration
     {
         $this->addSql('CREATE TEMPORARY TABLE __temp__groups AS SELECT id, parent_id, id_preview_attachement, enforce_2fa, comment, not_selectable, name, last_modified, datetime_added FROM groups');
         $this->addSql('DROP TABLE groups');
-        $this->addSql('CREATE TABLE groups (id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, parent_id INTEGER DEFAULT NULL, id_preview_attachement INTEGER DEFAULT NULL, enforce_2fa BOOLEAN NOT NULL, comment CLOB NOT NULL, not_selectable BOOLEAN NOT NULL, name VARCHAR(255) NOT NULL, last_modified DATETIME DEFAULT CURRENT_TIMESTAMP NOT NULL, datetime_added DATETIME DEFAULT CURRENT_TIMESTAMP NOT NULL, permissions_data DEFAULT \'[]\', CONSTRAINT FK_F06D3970727ACA70 FOREIGN KEY (parent_id) REFERENCES groups (id) ON UPDATE NO ACTION ON DELETE NO ACTION NOT DEFERRABLE INITIALLY IMMEDIATE, CONSTRAINT FK_F06D39706DEDCEC2 FOREIGN KEY (id_preview_attachement) REFERENCES attachments (id) ON UPDATE NO ACTION ON DELETE NO ACTION NOT DEFERRABLE INITIALLY IMMEDIATE)');
+        $this->addSql('CREATE TABLE groups (id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, parent_id INTEGER DEFAULT NULL, id_preview_attachement INTEGER DEFAULT NULL, enforce_2fa BOOLEAN NOT NULL, comment CLOB NOT NULL, not_selectable BOOLEAN NOT NULL, name VARCHAR(255) NOT NULL, last_modified DATETIME DEFAULT CURRENT_TIMESTAMP NOT NULL, datetime_added DATETIME DEFAULT CURRENT_TIMESTAMP NOT NULL, permissions_data CLOB DEFAULT \'[]\' NOT NULL --(DC2Type:json)
+        , CONSTRAINT FK_F06D3970727ACA70 FOREIGN KEY (parent_id) REFERENCES groups (id) ON UPDATE NO ACTION ON DELETE NO ACTION NOT DEFERRABLE INITIALLY IMMEDIATE, CONSTRAINT FK_F06D39706DEDCEC2 FOREIGN KEY (id_preview_attachement) REFERENCES attachments (id) ON UPDATE NO ACTION ON DELETE NO ACTION NOT DEFERRABLE INITIALLY IMMEDIATE)');
         $this->addSql('INSERT INTO groups (id, parent_id, id_preview_attachement, enforce_2fa, comment, not_selectable, name, last_modified, datetime_added) SELECT id, parent_id, id_preview_attachement, enforce_2fa, comment, not_selectable, name, last_modified, datetime_added FROM __temp__groups');
         $this->addSql('DROP TABLE __temp__groups');
         $this->addSql('CREATE INDEX group_idx_parent_name ON groups (parent_id, name)');
         $this->addSql('CREATE INDEX group_idx_name ON groups (name)');
         $this->addSql('CREATE INDEX IDX_F06D3970727ACA70 ON groups (parent_id)');
         $this->addSql('CREATE INDEX IDX_F06D39706DEDCEC2 ON groups (id_preview_attachement)');
+        $this->addSql('CREATE TEMPORARY TABLE __temp__users AS SELECT id, group_id, currency_id, id_preview_attachement, disabled, config_theme, pw_reset_token, config_instock_comment_a, config_instock_comment_w, trusted_device_cookie_version, backup_codes, google_authenticator_secret, config_timezone, config_language, email, department, last_name, first_name, need_pw_change, password, name, settings, backup_codes_generation_date, pw_reset_expires, last_modified, datetime_added FROM users');
+        $this->addSql('DROP TABLE users');
+        $this->addSql('CREATE TABLE users (id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, group_id INTEGER DEFAULT NULL, currency_id INTEGER DEFAULT NULL, id_preview_attachement INTEGER DEFAULT NULL, disabled BOOLEAN NOT NULL, config_theme VARCHAR(255) DEFAULT NULL, pw_reset_token VARCHAR(255) DEFAULT NULL, config_instock_comment_a CLOB NOT NULL, config_instock_comment_w CLOB NOT NULL, trusted_device_cookie_version INTEGER NOT NULL, backup_codes CLOB NOT NULL --(DC2Type:json)
+        , google_authenticator_secret VARCHAR(255) DEFAULT NULL, config_timezone VARCHAR(255) DEFAULT NULL, config_language VARCHAR(255) DEFAULT NULL, email VARCHAR(255) DEFAULT NULL, department VARCHAR(255) DEFAULT NULL, last_name VARCHAR(255) DEFAULT NULL, first_name VARCHAR(255) DEFAULT NULL, need_pw_change BOOLEAN NOT NULL, password VARCHAR(255) DEFAULT NULL, name VARCHAR(180) NOT NULL, settings CLOB NOT NULL --(DC2Type:json)
+        , backup_codes_generation_date DATETIME DEFAULT NULL, pw_reset_expires DATETIME DEFAULT NULL, last_modified DATETIME DEFAULT CURRENT_TIMESTAMP NOT NULL, datetime_added DATETIME DEFAULT CURRENT_TIMESTAMP NOT NULL, permissions_data CLOB DEFAULT \'[]\' NOT NULL --(DC2Type:json)
+        , CONSTRAINT FK_1483A5E9FE54D947 FOREIGN KEY (group_id) REFERENCES groups (id) ON UPDATE NO ACTION ON DELETE NO ACTION NOT DEFERRABLE INITIALLY IMMEDIATE, CONSTRAINT FK_1483A5E938248176 FOREIGN KEY (currency_id) REFERENCES currencies (id) ON UPDATE NO ACTION ON DELETE NO ACTION NOT DEFERRABLE INITIALLY IMMEDIATE, CONSTRAINT FK_1483A5E96DEDCEC2 FOREIGN KEY (id_preview_attachement) REFERENCES attachments (id) ON UPDATE NO ACTION ON DELETE NO ACTION NOT DEFERRABLE INITIALLY IMMEDIATE)');
+        $this->addSql('INSERT INTO users (id, group_id, currency_id, id_preview_attachement, disabled, config_theme, pw_reset_token, config_instock_comment_a, config_instock_comment_w, trusted_device_cookie_version, backup_codes, google_authenticator_secret, config_timezone, config_language, email, department, last_name, first_name, need_pw_change, password, name, settings, backup_codes_generation_date, pw_reset_expires, last_modified, datetime_added) SELECT id, group_id, currency_id, id_preview_attachement, disabled, config_theme, pw_reset_token, config_instock_comment_a, config_instock_comment_w, trusted_device_cookie_version, backup_codes, google_authenticator_secret, config_timezone, config_language, email, department, last_name, first_name, need_pw_change, password, name, settings, backup_codes_generation_date, pw_reset_expires, last_modified, datetime_added FROM __temp__users');
+        $this->addSql('DROP TABLE __temp__users');
+        $this->addSql('CREATE INDEX user_idx_username ON users (name)');
+        $this->addSql('CREATE UNIQUE INDEX UNIQ_1483A5E95E237E06 ON users (name)');
+        $this->addSql('CREATE INDEX IDX_1483A5E9FE54D947 ON users (group_id)');
+        $this->addSql('CREATE INDEX IDX_1483A5E938248176 ON users (currency_id)');
+        $this->addSql('CREATE INDEX IDX_1483A5E96DEDCEC2 ON users (id_preview_attachement)');
 
 
         $this->addDataMigrationAndWarning();
@@ -84,6 +98,29 @@ final class Version20221114193325 extends AbstractMultiPlatformMigration
 
     public function sqLiteDown(Schema $schema): void
     {
+        $this->addSql('CREATE TEMPORARY TABLE __temp__groups AS SELECT id, parent_id, id_preview_attachement, enforce_2fa, comment, not_selectable, name, last_modified, datetime_added FROM "groups"');
+        $this->addSql('DROP TABLE "groups"');
+        $this->addSql('CREATE TABLE "groups" (id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, parent_id INTEGER DEFAULT NULL, id_preview_attachement INTEGER DEFAULT NULL, enforce_2fa BOOLEAN NOT NULL, comment CLOB NOT NULL, not_selectable BOOLEAN NOT NULL, name VARCHAR(255) NOT NULL, last_modified DATETIME DEFAULT CURRENT_TIMESTAMP NOT NULL, datetime_added DATETIME DEFAULT CURRENT_TIMESTAMP NOT NULL, perms_system INTEGER NOT NULL, perms_groups INTEGER NOT NULL, perms_users INTEGER NOT NULL, perms_self INTEGER NOT NULL, perms_system_config INTEGER NOT NULL, perms_system_database INTEGER NOT NULL, perms_parts BIGINT NOT NULL, perms_parts_name SMALLINT NOT NULL, perms_parts_category SMALLINT NOT NULL, perms_parts_description SMALLINT NOT NULL, perms_parts_minamount SMALLINT NOT NULL, perms_parts_footprint SMALLINT NOT NULL, perms_parts_lots SMALLINT NOT NULL, perms_parts_tags SMALLINT NOT NULL, perms_parts_unit SMALLINT NOT NULL, perms_parts_mass SMALLINT NOT NULL, perms_parts_manufacturer SMALLINT NOT NULL, perms_parts_status SMALLINT NOT NULL, perms_parts_mpn SMALLINT NOT NULL, perms_parts_comment SMALLINT NOT NULL, perms_parts_order SMALLINT NOT NULL, perms_parts_orderdetails SMALLINT NOT NULL, perms_parts_prices SMALLINT NOT NULL, perms_parts_parameters SMALLINT NOT NULL, perms_parts_attachements SMALLINT NOT NULL, perms_devices INTEGER NOT NULL, perms_devices_parts INTEGER NOT NULL, perms_storelocations INTEGER NOT NULL, perms_footprints INTEGER NOT NULL, perms_categories INTEGER NOT NULL, perms_suppliers INTEGER NOT NULL, perms_manufacturers INTEGER NOT NULL, perms_attachement_types INTEGER NOT NULL, perms_currencies INTEGER NOT NULL, perms_measurement_units INTEGER NOT NULL, perms_tools INTEGER NOT NULL, perms_labels INTEGER NOT NULL, CONSTRAINT FK_F06D3970727ACA70 FOREIGN KEY (parent_id) REFERENCES "groups" (id) NOT DEFERRABLE INITIALLY IMMEDIATE, CONSTRAINT FK_F06D39706DEDCEC2 FOREIGN KEY (id_preview_attachement) REFERENCES "attachments" (id) NOT DEFERRABLE INITIALLY IMMEDIATE)');
+        $this->addSql('INSERT INTO "groups" (id, parent_id, id_preview_attachement, enforce_2fa, comment, not_selectable, name, last_modified, datetime_added) SELECT id, parent_id, id_preview_attachement, enforce_2fa, comment, not_selectable, name, last_modified, datetime_added FROM __temp__groups');
+        $this->addSql('DROP TABLE __temp__groups');
+        $this->addSql('CREATE INDEX IDX_F06D3970727ACA70 ON "groups" (parent_id)');
+        $this->addSql('CREATE INDEX IDX_F06D39706DEDCEC2 ON "groups" (id_preview_attachement)');
+        $this->addSql('CREATE INDEX group_idx_name ON "groups" (name)');
+        $this->addSql('CREATE INDEX group_idx_parent_name ON "groups" (parent_id, name)');
 
+        $this->addSql('CREATE TEMPORARY TABLE __temp__users AS SELECT id, group_id, currency_id, id_preview_attachement, disabled, config_theme, pw_reset_token, config_instock_comment_a, config_instock_comment_w, trusted_device_cookie_version, backup_codes, google_authenticator_secret, config_timezone, config_language, email, department, last_name, first_name, need_pw_change, password, name, settings, backup_codes_generation_date, pw_reset_expires, last_modified, datetime_added FROM "users"');
+        $this->addSql('DROP TABLE "users"');
+        $this->addSql('CREATE TABLE "users" (id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, group_id INTEGER DEFAULT NULL, currency_id INTEGER DEFAULT NULL, id_preview_attachement INTEGER DEFAULT NULL, disabled BOOLEAN NOT NULL, config_theme VARCHAR(255) DEFAULT NULL, pw_reset_token VARCHAR(255) DEFAULT NULL, config_instock_comment_a CLOB NOT NULL, config_instock_comment_w CLOB NOT NULL, trusted_device_cookie_version INTEGER NOT NULL, backup_codes CLOB NOT NULL --
+(DC2Type:json)
+        , google_authenticator_secret VARCHAR(255) DEFAULT NULL, config_timezone VARCHAR(255) DEFAULT NULL, config_language VARCHAR(255) DEFAULT NULL, email VARCHAR(255) DEFAULT NULL, department VARCHAR(255) DEFAULT NULL, last_name VARCHAR(255) DEFAULT NULL, first_name VARCHAR(255) DEFAULT NULL, need_pw_change BOOLEAN NOT NULL, password VARCHAR(255) DEFAULT NULL, name VARCHAR(180) NOT NULL, settings CLOB NOT NULL --
+(DC2Type:json)
+        , backup_codes_generation_date DATETIME DEFAULT NULL, pw_reset_expires DATETIME DEFAULT NULL, last_modified DATETIME DEFAULT CURRENT_TIMESTAMP NOT NULL, datetime_added DATETIME DEFAULT CURRENT_TIMESTAMP NOT NULL, perms_system INTEGER NOT NULL, perms_groups INTEGER NOT NULL, perms_users INTEGER NOT NULL, perms_self INTEGER NOT NULL, perms_system_config INTEGER NOT NULL, perms_system_database INTEGER NOT NULL, perms_parts BIGINT NOT NULL, perms_parts_name SMALLINT NOT NULL, perms_parts_category SMALLINT NOT NULL, perms_parts_description SMALLINT NOT NULL, perms_parts_minamount SMALLINT NOT NULL, perms_parts_footprint SMALLINT NOT NULL, perms_parts_lots SMALLINT NOT NULL, perms_parts_tags SMALLINT NOT NULL, perms_parts_unit SMALLINT NOT NULL, perms_parts_mass SMALLINT NOT NULL, perms_parts_manufacturer SMALLINT NOT NULL, perms_parts_status SMALLINT NOT NULL, perms_parts_mpn SMALLINT NOT NULL, perms_parts_comment SMALLINT NOT NULL, perms_parts_order SMALLINT NOT NULL, perms_parts_orderdetails SMALLINT NOT NULL, perms_parts_prices SMALLINT NOT NULL, perms_parts_parameters SMALLINT NOT NULL, perms_parts_attachements SMALLINT NOT NULL, perms_devices INTEGER NOT NULL, perms_devices_parts INTEGER NOT NULL, perms_storelocations INTEGER NOT NULL, perms_footprints INTEGER NOT NULL, perms_categories INTEGER NOT NULL, perms_suppliers INTEGER NOT NULL, perms_manufacturers INTEGER NOT NULL, perms_attachement_types INTEGER NOT NULL, perms_currencies INTEGER NOT NULL, perms_measurement_units INTEGER NOT NULL, perms_tools INTEGER NOT NULL, perms_labels INTEGER NOT NULL, CONSTRAINT FK_1483A5E9FE54D947 FOREIGN KEY (group_id) REFERENCES "groups" (id) NOT DEFERRABLE INITIALLY IMMEDIATE, CONSTRAINT FK_1483A5E938248176 FOREIGN KEY (currency_id) REFERENCES currencies (id) NOT DEFERRABLE INITIALLY IMMEDIATE, CONSTRAINT FK_1483A5E96DEDCEC2 FOREIGN KEY (id_preview_attachement) REFERENCES "attachments" (id) NOT DEFERRABLE INITIALLY IMMEDIATE)');
+        $this->addSql('INSERT INTO "users" (id, group_id, currency_id, id_preview_attachement, disabled, config_theme, pw_reset_token, config_instock_comment_a, config_instock_comment_w, trusted_device_cookie_version, backup_codes, google_authenticator_secret, config_timezone, config_language, email, department, last_name, first_name, need_pw_change, password, name, settings, backup_codes_generation_date, pw_reset_expires, last_modified, datetime_added) SELECT id, group_id, currency_id, id_preview_attachement, disabled, config_theme, pw_reset_token, config_instock_comment_a, config_instock_comment_w, trusted_device_cookie_version, backup_codes, google_authenticator_secret, config_timezone, config_language, email, department, last_name, first_name, need_pw_change, password, name, settings, backup_codes_generation_date, pw_reset_expires, last_modified, datetime_added FROM __temp__users');
+        $this->addSql('DROP TABLE __temp__users');
+        $this->addSql('CREATE UNIQUE INDEX UNIQ_1483A5E95E237E06 ON "users" (name)');
+        $this->addSql('CREATE INDEX IDX_1483A5E9FE54D947 ON "users" (group_id)');
+        $this->addSql('CREATE INDEX IDX_1483A5E938248176 ON "users" (currency_id)');
+        $this->addSql('CREATE INDEX IDX_1483A5E96DEDCEC2 ON "users" (id_preview_attachement)');
+        $this->addSql('CREATE INDEX user_idx_username ON "users" (name)');
     }
 }
diff --git a/src/Entity/UserSystem/PermissionData.php b/src/Entity/UserSystem/PermissionData.php
index dd468ce0..e059de34 100644
--- a/src/Entity/UserSystem/PermissionData.php
+++ b/src/Entity/UserSystem/PermissionData.php
@@ -25,7 +25,7 @@ final class PermissionData implements \JsonSerializable
      * permission => [
      *     operation => value,
      * ]
-     * @ORM\Column(type="json", name="data")
+     * @ORM\Column(type="json", name="data", options={"default": "[]"})
      */
     protected ?array $data = [];