All Task : SIGSEGV: segmentation violation

Hello,

for example in the following task: Task 809521610

Stderr output

7.12.0

<message> process got signal 11</message> <stderr_txt> putenv 'LAL_DEBUG_LEVEL=3' SIGSEGV: segmentation violation</p>

<p></stderr_txt>

What can be the cause?
Old Boinc version, incompatible system library?
(kernel 4.17.0-1-amd64)

greetings
Michael