I am in process of upgrading form apache 2.2 to 2.4.54. I am getting following errros in error_log : [Thu Nov 17 17:08:48.617727 2022] [slotmem_shm:error] [pid 63482:tid 139669230081856] (17)File exists: AH02611: create: apr_shm_create(/home/user1/apps/apache-2.4.54/cache/project/slotmem-shm-pbc791126_0.shm) failed [Thu Nov 17 17:08:48.617779 2022] [proxy_balancer:emerg] [pid 63482:tid 139669230081856] (17)File exists: AH01179: balancer slotmem_create failed [Thu Nov 17 17:08:48.617793 2022] [:emerg] [pid 63482:tid 139669230081856] AH00020: Configuration Failed, exiting httpd server doesn't run whit the errors. I am not proceeding to prod to due to this issue.
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