504 Gateway Time-out while accessing Widget and Menu

The Redis plugin is working fine in our environment, We are getting a 504 gateway timeout error While accessing the Widget/Menu section (Appearance -> Widget/Menu) through the admin panel. Rest everything is working fine only widget and menu sections are creating issues. We installed and uninstalled the plugin multiple times and tested. The issue occurs only when Redis is enabled. Sometimes the menu/widget page will open after multiple refreshes but will again through 504 after the refesh.
Maybe the issues with my wp-config redis parameter. Find my config details below.

define(‘WP_REDIS_SCHEME’, ‘tls’);
define(‘WP_REDIS_HOST’, ‘Actual host name’);
define(‘WP_REDIS_PORT’, ‘6380’);
define(‘WP_REDIS_DATABASE’, ‘0’);
define(‘WP_REDIS_PASSWORD’, ‘Password’);
define(‘WP_CACHE_KEY_SALT’,’Stage’);
define(‘WP_REDIS_MAXTTL’, ’60’);

Diagnostics

Status: Connected
Client: Predis (v1.1.6)
Drop-in: Valid
Disabled: No
Filesystem: Working
Ping: PONG
Errors: []
PhpRedis: Not loaded
Predis: 1.1.6
Credis: Not loaded
PHP Version: 7.3.13-1+ubuntu18.04.1+deb.sury.org+1
Plugin Version: 2.0.15
Redis Version: 4.0.14
Multisite: No
Global Prefix: “wp_”
Blog Prefix: “wp_”
WP_REDIS_SCHEME: “tls”
WP_REDIS_HOST: “host name”
WP_REDIS_PORT: “6380”
WP_REDIS_DATABASE: “0”
WP_REDIS_MAXTTL: “60”
WP_REDIS_PREFIX: “Stage”
WP_CACHE_KEY_SALT: “stage”
WP_REDIS_IGNORED_GROUPS: [“counts”,”plugins”,”user_meta”]
WP_REDIS_PASSWORD: ????????
Global Groups: [
“blog-details”,
“blog-id-cache”,
“blog-lookup”,
“global-posts”,
“networks”,
“rss”,
“sites”,
“site-details”,
“site-lookup”,
“site-options”,
“site-transient”,
“users”,
“useremail”,
“userlogins”,
“usermeta”,
“user_meta”,
“userslugs”,
“redis-cache”,
“blog_meta”
]
Ignored Groups: [
“counts”,
“plugins”,
“user_meta”,
“themes”
]
Unflushable Groups: []
Drop-ins: [
“advanced-cache.php v by “,
“Redis Object Cache Drop-In v2.0.15 by Till Krüss”
]