After updating to Drupal Core 8.5.6 with composer, I get this error in Drupal:

Fatal error: Interface 'Doctrine\Common\Reflection\ClassFinderInterface' not found in /var/www/docro
ot/core/lib/Drupal/Component/Annotation/Reflection/MockFileFinder.php on line 14
Drush command terminated abnormally due to an unrecoverable error.                       [error]
Error: Interface 'Doctrine\Common\Reflection\ClassFinderInterface' not found in
/var/www/docroot/core/lib/Drupal/Component/Annotation/Reflection/MockFileFinder.php, line
14

Could it be related to this?
https://www.drupal.org/project/drupal/issues/2631202

API page: https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Component%21Anno...

Enter a descriptive title (above) relating to MockFileFinder.php, then describe the problem you have found:

CommentFileSizeAuthor
Capture.PNG22.45 KBloopy1492

Comments

loopy1492 created an issue. See original summary.

loopy1492’s picture

loopy1492 commented

Looks like it was this...

"conflict": {
    "drupal/drupal": "*",
    "doctrine/common":">2.8"
},

https://drupal.stackexchange.com/questions/266221/site-not-working-after...

cilefen’s picture

cilefen commented
Status: Active » Closed (duplicate)
Related issues: +#2986725: doctrine common 2.9 has moved reflection