[TYPO3-Solr] scheduler task Commit Solr Index (solr) failed - invalid json

[Bernhard Karimi]

Hi there,

i try to get solr running with
typo3 4.5.22
ext:solr 2.8.2

and I get an error when I try to commit the solr index scheduler task:

"Execution of task "Commit Solr Index (solr)" failed with the following
message: Solr response does not appear to be valid JSON, please examine
the raw response with getRawResponse() method"

Exactly the same as in this bug report from 2 weeks ago:
http://forge.typo3.org/issues/48297

Any idea, how to solve this?

Thanks,
Bernhard