Site E_ERROR

Hello,
I have been using Kirki Customizer with the same theme for about 2 years but today nothing works.

My site bug and I have to relaunch Kirki Customizer in recovery mode.

Here is the error message displayed:

An error of type E_ERROR was caused in line 167 of the file /var/www/html/wp-content/plugins/kirki/modules/css/class-kirki-modules-css-generator.php. Error Message: Uncaught Error: Class ‘Kirki_Output’ not found in /var/www/html/wp-content/plugins/kirki/modules/css/class-kirki-modules-css-generator.php:167
Stack trace:
# 0 /var/www/html/wp-content/plugins/kirki/modules/css/class-kirki-modules-css.php(257): Kirki_Modules_CSS_Generator :: css (Array)
# 1 /var/www/html/wp-content/themes/5th-avenue/inc/functions/styles.php(110): Kirki_Modules_CSS :: loop_controls (‘av5_theme’)
# 2 /var/www/html/wp-content/themes/5th-avenue/inc/functions/styles.php(64): av5_styles_kirki ()
# 3 /var/www/html/wp-content/themes/5th-avenue/inc/integrations/css-to-file.php(141): av5_styles (false)
# 4 /var/www/html/wp-content/themes/5th-avenue/inc/integrations/css-to-file.php(50): AV5_CSS_To_File-> write_file ()
# 5 /var/www/html/wp-content/themes/5th-avenue/inc/integrations/css-to-file.php(33): AV5_CSS_To_File -> __ construct ()
# 6 /var/www/html/wp-content/themes/5th-avenue/inc/integrations/css-to-file.php(178): AV5_CSS_To_File :: instance ()
# 7 /var/www/html/wp-content/themes/5th-avenue/inc/functions/styles.php(761):

I updated my plugins yesterday, is it probably related?

Can you help me please this site is my business

thanks in advance
Nino.