Problem with editing product and product_attributes page in admin

Hello,

I have problem with edit existing product and problem with product_attributes page in admin. If aj try edit product or open Products product_attributes page i got white blank screen. I import my all product and arttribudes with wp all import plugin.

But if I add new product normal way Product > Add new product, new product add work properly and editink product work properly, but i still have Product > Attributes got blank page.

I have not any errors in my debug log 🙁 I also try deactivete all plugins and change themes but nothing helped.

Here is system report from woocommerce and website link : https://www.etronik.cz/ :

### WordPress Environment ###

Home URL: https://www.etronik.cz
Site URL: https://www.etronik.cz
WC Version: 2.6.8
Log Directory Writable: ✔
WP Version: 4.6.1
WP Multisite: –
WP Memory Limit: 600 MB
WP Debug Mode: ✔
WP Cron: ✔
Language: en_US

### Server Environment ###

Server Info: Apache
PHP Version: 5.6.20
PHP Post Max Size: 60 MB
PHP Time Limit: 800
PHP Max Input Vars: 1000
cURL Version: 7.45.0
OpenSSL/1.0.1p

SUHOSIN Installed: –
MySQL Version: 5.6.24
Max Upload Size: 40 MB
Default Timezone is UTC: ✔
fsockopen/cURL: ✔
SoapClient: ✔
DOMDocument: ✔
GZip: ✔
Multibyte String: ✔
Remote Post: ✔
Remote Get: ✔

### Database ###

WC Database Version: 2.6.8
: 
woocommerce_sessions: ✔
woocommerce_api_keys: ✔
woocommerce_attribute_taxonomies: ✔
woocommerce_downloadable_product_permissions: ✔
woocommerce_order_items: ✔
woocommerce_order_itemmeta: ✔
woocommerce_tax_rates: ✔
woocommerce_tax_rate_locations: ✔
woocommerce_shipping_zones: ✔
woocommerce_shipping_zone_locations: ✔
woocommerce_shipping_zone_methods: ✔
woocommerce_payment_tokens: ✔
woocommerce_payment_tokenmeta: ✔
MaxMind GeoIP Database: ✔

### Active Plugins (22) ###

Redux Framework: by Team Redux – 3.6.2
Akismet: by Automattic – 3.2
České služby pro WordPress: by Pavel Hejn – 0.5
Change default login logo url and title: by Venugopal. – 1.0
Contact Form 7: by Takayuki Miyoshi – 4.5.1
Debug: by SoniNow Team – 1.7
Electro Extensions: by Transvelo – 1.2.3
Envato Market: by Derek Herman – 1.0.0-RC2
WPBakery Visual Composer: by Michael M - WPBakery.com – 5.0
Loco Translate: by Tim Whitlock – 2.0.10
MailChimp for WordPress: by ibericode – 4.0.7
WooCommerce Product Filter: by Mihajlovic Nenad – 5.9.3
Really Simple SSL: by Rogier Lankhorst – 2.4.1
Regenerate Thumbnails: by Alex Mills (Viper007Bond) – 2.2.6
Slider Revolution: by ThemePunch – 5.3.0.2
WooCommerce: by WooThemes – 2.6.8
WP All Import Pro: by Soflyy – 4.3.0
WP reCaptcha Integration: by Jörn Lund – 1.1.10
WP Rocket: by WP Media – 2.8.23
WP All Import - WooCommerce Add-On Pro: by Soflyy – 2.3.1
YITH WooCommerce Compare: by YITHEMES – 2.1.0
YITH WooCommerce Wishlist: by YITHEMES – 2.0.16

### Settings ###

Force SSL: –
Currency: CZK (Kč)
Currency Position: right
Thousand Separator: 
Decimal Separator: .
Number of Decimals: 0

### API ###

API Enabled: ✔

### WC Pages ###

Shop Base: #4 - /obchod/
Cart: #5 - /kosik/
Checkout: #6 - /pokladna/
My Account: #7 - /muj-ucet/

### Taxonomies ###

Product Types: external (external)
grouped (grouped)
simple (simple)
variable (variable)

### Theme ###

Name: Electro Child
Version: 1.2.3
Author URL: http://transvelo.com/
Child Theme: ✔
Parent Theme Name: Electro
Parent Theme Version: 1.2.3
Parent Theme Author URL: http://www.transvelo.com
WooCommerce Support: ✔

### Templates ###

Overrides: electro/woocommerce/archive-product.php
electro/woocommerce/global/quantity-input.php

I can send you login information or create account to you with admin role , but please contact me on email: miloskocan@gmail.com , i sure need help.

Thanks :).