Symptoms
- 
Acronis backup fails with the following error:
The pre-data capture command completed with non-zero return code: 1
 - 
The following error messages can be found in
/var/log/plesk/panel.logfile:[2020-08-20 18:32:57.218] ERR [extension/acronis-backup] The execution of create-meta.php has failed with the following message:
[2020-08-20 18:32:57.203] ERR [extension/acronis-backup] Creating of metadata was failed: Site without PhysicalHosting cannot be Webspace 
Cause
Acronis Backup extension issue.
Resolution
- 
Connect to the server via SSH.
 - 
Backup affected file:
# mv /usr/local/psa/admin/plib/modules/acronis-backup/library/MetaDataCollector.php{,.pre-fix}
 - 
Download and unpack file with fix:
# wget https://support.plesk.com/hc/en-us/article_attachments/8740889862802/MetaDataCollector.zip
# unzip MetaDataCollector.zip
 - 
Replace original file:
# cp MetaDataCollector.php /usr/local/psa/admin/plib/modules/acronis-backup/library/MetaDataCollector.php