[TYPO3-calendar] Update to 1.10.0 crashes

[Dirk Steffens]

Hi everybody,

with typo3 6.2.15 I'm trying to update from 1.9.3 to 1.10.0
This always results in following message:

Parse error: syntax error, unexpected 'class' (T_CLASS), expecting 
identifier (T_STRING) or variable (T_VARIABLE) or '{' or '$' in 
/-domain-/typo3conf/ext/cal/ext_localconf.php on line 861

Is there anything to pay attentionn during the update?

Thanks for reading.

Regards
Dirk