Errors: sqlite_object_cache failure, deleting sqlite files to retry

Hi, firstly thanks for your plugins, its really speed up my woocomerce site.

Some time (once in several days) my site not respond for 5-15 min… I look at log and see:

mod_fcgid: stderr: #31 /var/www/musite_usr/data/www/amusite.com/wp-content/plugins/woocommerce/templates/taxonomy-product-cat.php(22): wc_get_template('archive-product...')
mod_fcgid: stderr: #32 /var/www/musite_usr/data/www/amusite.com/wp-includes/template-loader.php(106): include('/var/www/adelbe...')
mod_fcgid: stderr: #33 /var/www/musite_usr/data/www/amusite.com/wp-blog-header.php(19): require_once('/var/www/adelbe...')
mod_fcgid: stderr: #34 /var/www/musite_usr/data/www/amusite.com/index.php(17): require('/var/www/adelbe...')
mod_fcgid: stderr: #35 {main}
mod_fcgid: stderr: sqlite_object_cache failure, deleting sqlite files to retry. 0
mod_fcgid: stderr: SQLite Object Cache: 3.31.1 igbinary: handle_put database is locked (5) Unable to execute statement: database is locked (0) #0 /var/www/musite_usr/data/www/amusite.com/wp-content/object-cache.php(1449): SQLite3Stmt->execute()
mod_fcgid: stderr: #1 /var/www/musite_usr/data/www/amusite.com/wp-content/object-cache.php(1425): WP_Object_Cache->put_by_name('options|asp_css', 'a:2:{s:5:"basic...', 0)
mod_fcgid: stderr: #2 /var/www/musite_usr/data/www/amusite.com/wp-content/object-cache.php(1257): WP_Object_Cache->set('asp_css', 'a:2:{s:5:"basic...', 'options', 0)
mod_fcgid: stderr: #3 /var/www/musite_usr/data/www/amusite.com/wp-content/object-cache.php(2296): WP_Object_Cache->add('asp_css', 'a:2:{s:5:"basic...', 'options', 0)
mod_fcgid: stderr: #4 /var/www/musite_usr/data/www/amusite.com/wp-includes/option.php(204): wp_cache_add('asp_css', 'a:2:{s:5:"basic...', 'options')
mod_fcgid: stderr: #5 /var/www/musite_usr/data/www/amusite.com/wp-includes/option.php(1501): get_option('asp_css', Array)
mod_fcgid: stderr: #6 /var/www/musite_usr/data/www/amusite.com/wp-includes/option.php(1366): get_network_option(1, 'asp_css', Array)



mod_fcgid: stderr: #22 {main}
mod_fcgid: stderr: sqlite_object_cache failure, deleting sqlite files to retry. 0
mod_fcgid: stderr: PHP Fatal error:  ob_start(): Cannot use output buffering in output buffering display handlers in /var/www/musite_usr/data/www/amusite.com/wp-content/object-cache.php on line 2237
od_fcgid: stderr: com/wp-includes/load.php(1252): do_action('shutdown')
od_fcgid: stderr: #21 [internal function]: shutdown_action_hook()
od_fcgid: stderr: #22 {main}
od_fcgid: stderr: sqlite_object_cache failure, deleting sqlite files to retry. 0
od_fcgid: stderr: PHP Fatal error:  ob_start(): Cannot use output buffering in output buffering display handlers in /var/www/musite_usr/data/www/amusite.com/wp-content/object-cache.php on line 2237
mod_fcgid: stderr: SQLite Object Cache: 3.31.1 igbinary: handle_put database is locked (5) Unable to execute statement: database is locked (0) #0 /var/www/musite_usr/data/www/amusite.com/wp-content/object-cache.php(1449): SQLite3Stmt->execute()
mod_fcgid: stderr: #1 /var/www/musite_usr/data/www/amusite.com/wp-content/object-cache.php(1425): WP_Object_Cache->put_by_name('post_meta|\\x1F0011...', Array, 0)
mod_fcgid: stderr: #2 /var/www/musite_usr/data/www/amusite.com/wp-content/object-cache.php(1257): WP_Object_Cache->set(11178, Array, 'post_meta', 0)

This errors 2-5 times each days…

Can you tell me which way to look, what could be wrong, thank you!