[TYPO3-english] typo3 7.6.16 Allowed memory size error

[Riccardo Coletta]

I'm very new to the forum and I apologize for my english and for any error in posting things in right way and section. Point me out any mistake and I will correct it

I've got a typo3 site that throw this error every now and then, and we're not able to reproduce it on will

 PHP Fatal error:  Allowed memory size of 134217728 bytes exhausted (tried to allocate 3963167672086036512 bytes) in /var/www/typo3_src-7.6.16/typo3/sysext/core/Classes/Cache/Backend/SimpleFileBackend.php on line 106

As you can see, the memory it seems php is trying to allocate is an unbelivable high value and look not possible, expecially because line 106 is only a string concatenation.

Unfortunately I've not direct accesso to the server (Red Hat 7) but only to the typo3 administration and cannot direct access the typo3 source but I've to ask server administrator for every single code line to be changed in the core.

Hope someone can help me

Apache: 2.4.6
PHP: 7.0.12
MySql: 5.7.16
Typo3: 7.6.16