Bug #82863
Updated by Markus Klein over 6 years ago
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Core: Error handler (BE): PHP Warning: file_get_contents(/var/www/html/<thesite>/typo3/typo3conf/ext/rtehtmlarea/Resources/Public/Css/Skin/htmlarea.css): failed to open stream: No such file or directory in /<path_to_source>/typo3/sysext/core/Classes/Resource/ResourceCompressor.php line 359
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This bug seems to be a resurrection of #78803, which was fixed a year ago.
Again, setting @$['BE']['compressionLevel'] = 5;@ causes the issue.
Tested with ext:rtehtmlarea in latest core v8.7.