To fix above error, kindly follow the below steps
Open PluginListGenerator.php file located at vendor/magento/framework/Interception.
Go to line no 414 or find the word“scopePriorityScheme”in PluginListGenerator.php file.
Replace the line
"$cacheId = implode('|', $this->scopePriorityScheme) ."|". $this->cacheId;"
with
"$cacheId = implode('-', $this->scopePriorityScheme) ."-". $this->cacheId;"