Additional uncaught exception thrown while handling exception.

Original

Drupal\Core\Extension\InfoParserException: The 'core_version_requirement' constraint (9.1.0) requires the 'core' key not be set in core/themes/bartik/bartik.info.yml in Drupal\Core\Extension\InfoParserDynamic->parse() (line 88 of /data/vhosts/dream/drupal/web/core/lib/Drupal/Core/Extension/InfoParserDynamic.php).

Drupal\Core\Extension\InfoParserDynamic->parse('core/themes/bartik/bartik.info.yml') (Line: 22)
Drupal\Core\Extension\InfoParser->parse('core/themes/bartik/bartik.info.yml') (Line: 554)
Drupal\Core\Extension\ExtensionList->createExtensionInfo(Object) (Line: 266)
Drupal\Core\Extension\ThemeExtensionList->createExtensionInfo(Object) (Line: 316)
Drupal\Core\Extension\ExtensionList->doList() (Line: 113)
Drupal\Core\Extension\ThemeExtensionList->doList() (Line: 282)
Drupal\Core\Extension\ExtensionList->getList() (Line: 70)
_drupal_maintenance_theme() (Line: 464)
drupal_maintenance_theme() (Line: 510)
install_begin_request(Object, Array) (Line: 115)
install_drupal(Object) (Line: 48)

Additional

Drupal\Core\Extension\InfoParserException: The 'core_version_requirement' constraint (9.1.0) requires the 'core' key not be set in core/themes/bartik/bartik.info.yml in Drupal\Core\Extension\InfoParserDynamic->parse() (line 88 of /data/vhosts/dream/drupal/web/core/lib/Drupal/Core/Extension/InfoParserDynamic.php).

Drupal\Core\Extension\InfoParserDynamic->parse('core/themes/bartik/bartik.info.yml') (Line: 22)
Drupal\Core\Extension\InfoParser->parse('core/themes/bartik/bartik.info.yml') (Line: 554)
Drupal\Core\Extension\ExtensionList->createExtensionInfo(Object) (Line: 266)
Drupal\Core\Extension\ThemeExtensionList->createExtensionInfo(Object) (Line: 316)
Drupal\Core\Extension\ExtensionList->doList() (Line: 113)
Drupal\Core\Extension\ThemeExtensionList->doList() (Line: 282)
Drupal\Core\Extension\ExtensionList->getList() (Line: 70)
_drupal_maintenance_theme() (Line: 464)
drupal_maintenance_theme() (Line: 1015)
install_display_output(Array, Array, Array) (Line: 270)
_drupal_log_error(Array, 1) (Line: 323)
_drupal_exception_handler(Object)