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Here is the error log, below.

When i chnage generatepress template to default, then i can post.

I just checked the error log,
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at about:blank.

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js. (Reason: CORS request did not succeed). Status code: (null).

Failed to initialize plugin: wplink TypeError: window.wp is undefined
https://www.screenprintingnow.com/wp-includes/js/tinymce/plugins/wplink/plugin.min.js?wp-mce-49110-20201110:1
Ew https://www.screenprintingnow.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
Aw https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
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jt https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
u https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
n https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
onload https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
u https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
jt https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
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loadScripts https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
loadQueue https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
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waitFor https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
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onload https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
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loadScripts https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
loadQueue https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
Ow https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
Ow https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
Bw https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
render https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
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Ee https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
bind https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
tinymce.min.js:2:209096

Uncaught TypeError: window.getUserSetting is not a function
https://www.xxx.com/wp-includes/js/tinymce/plugins/wordpress/plugin.min.js?wp-mce-49110-20201110:1
fire https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
fire https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
bw https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
ww https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
Aw https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
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onload https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
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u https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
loadScripts https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
loadQueue https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
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onload https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
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loadScripts https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
loadQueue https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
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Bw https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
render https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
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Ee https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
bind https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
https://www.xxx.com/wp-includes/js/tinymce/tinymce.min.js?ver=49110-20201110:2
plugin.min.js:1:11090

I found the error, in Generatepress Child Theme i removed,

// Disable Jquery
add_filter( 'wp_enqueue_scripts', 'change_default_jquery', PHP_INT_MAX );

function change_default_jquery( ){
	
	if ( ! is_admin() ) {
    	wp_dequeue_script( 'jquery');
    	wp_deregister_script( 'jquery');   

	}
}