Clover can't find valid decoders for a license key and fails with a given stack trace:
A license key which was used has invalid format and could not be parsed by Clover.
Most common mistakes are:
- copy-pasting only part of a license key
- not embedding a key in a CDATA section
removing new line characters from a key (a license decoder is sensitive to this!), e.g.
Check if your license key used is exactly the same as stated on my.atlassian.com.