this what i got
[Wed Aug 29 12:26:20.658550 2018] [core:warn] [pid 6112] AH00098: pid file /var/run/apache2/apache2.pid overwritten -- Unclean shutdown of previous Apache run?
[Wed Aug 29 12:26:20.664959 2018] [mpm_prefork:notice] [pid 6112] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0h configured -- resuming normal operations
[Wed Aug 29 12:26:20.665014 2018] [core:notice] [pid 6112] AH00094: Command line: '/usr/sbin/apache2'
[Wed Aug 29 12:27:27.563287 2018] [mpm_prefork:emerg] [pid 6121] (43)Identifier removed: AH00144: couldn't grab the accept mutex
[Wed Aug 29 12:27:27.566692 2018] [mpm_prefork:emerg] [pid 6120] (43)Identifier removed: AH00144: couldn't grab the accept mutex
[Wed Aug 29 12:27:27.571578 2018] [mpm_prefork:emerg] [pid 6125] (43)Identifier removed: AH00144: couldn't grab the accept mutex
[Wed Aug 29 12:27:27.573969 2018] [mpm_prefork:emerg] [pid 6129] (43)Identifier removed: AH00144: couldn't grab the accept mutex
[Wed Aug 29 12:27:27.577938 2018] [mpm_prefork:emerg] [pid 6128] (43)Identifier removed: AH00144: couldn't grab the accept mutex
[Wed Aug 29 12:27:27.744667 2018] [core:alert] [pid 6112] AH00050: Child 6120 returned a Fatal error... Apache is exiting!
[Wed Aug 29 12:27:27.744807 2018] [:emerg] [pid 6112] AH02818: MPM run failed, exiting
[Wed Aug 29 12:27:33.534483 2018] [core:warn] [pid 6425] AH00098: pid file /var/run/apache2/apache2.pid overwritten -- Unclean shutdown of previous Apache run?
[Wed Aug 29 12:27:33.551045 2018] [mpm_prefork:notice] [pid 6425] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0h configured -- resuming normal operations
[Wed Aug 29 12:27:33.551087 2018] [core:notice] [pid 6425] AH00094: Command line: '/usr/sbin/apache2'
[Wed Aug 29 12:33:23.273811 2018] [mpm_prefork:notice] [pid 6425] AH00169: caught SIGTERM, shutting down
[Wed Aug 29 12:33:23.463364 2018] [mpm_prefork:notice] [pid 6566] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0h configured -- resuming normal operations
[Wed Aug 29 12:33:23.463471 2018] [core:notice] [pid 6566] AH00094: Command line: '/usr/sbin/apache2'
[Wed Aug 29 12:34:12.206500 2018] [mpm_prefork:emerg] [pid 6686] (43)Identifier removed: AH00144: couldn't grab the accept mutex
[Wed Aug 29 12:34:12.534263 2018] [core:alert] [pid 6566] AH00050: Child 6686 returned a Fatal error... Apache is exiting!
[Wed Aug 29 12:34:12.534321 2018] [:emerg] [pid 6566] AH02818: MPM run failed, exiting
[Wed Aug 29 12:34:12.536893 2018] [mpm_prefork:emerg] [pid 6689] (22)Invalid argument: AH00144: couldn't grab the accept mutex
[Wed Aug 29 12:34:12.539094 2018] [mpm_prefork:emerg] [pid 6688] (22)Invalid argument: AH00144: couldn't grab the accept mutex
[Wed Aug 29 12:36:21.687348 2018] [core:warn] [pid 9332] AH00098: pid file /var/run/apache2/apache2.pid overwritten -- Unclean shutdown of previous Apache run?
[Wed Aug 29 12:36:21.709583 2018] [mpm_prefork:notice] [pid 9332] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0h configured -- resuming normal operations
[Wed Aug 29 12:36:21.709650 2018] [core:notice] [pid 9332] AH00094: Command line: '/usr/sbin/apache2'
[Wed Aug 29 12:39:10.500747 2018] [mpm_prefork:emerg] [pid 9347] (43)Identifier removed: AH00144: couldn't grab the accept mutex
[Wed Aug 29 12:39:10.502052 2018] [mpm_prefork:emerg] [pid 9336] (43)Identifier removed: AH00144: couldn't grab the accept mutex
[Wed Aug 29 12:39:10.507276 2018] [mpm_prefork:emerg] [pid 9337] (43)Identifier removed: AH00144: couldn't grab the accept mutex
[Wed Aug 29 12:39:10.509953 2018] [mpm_prefork:emerg] [pid 9338] (43)Identifier removed: AH00144: couldn't grab the accept mutex
[Wed Aug 29 12:39:10.514020 2018] [mpm_prefork:emerg] [pid 9346] (43)Identifier removed: AH00144: couldn't grab the accept mutex
[Wed Aug 29 12:39:10.522017 2018] [mpm_prefork:emerg] [pid 9343] (43)Identifier removed: AH00144: couldn't grab the accept mutex
[Wed Aug 29 12:39:10.850698 2018] [core:alert] [pid 9332] AH00050: Child 9336 returned a Fatal error... Apache is exiting!
[Wed Aug 29 12:39:10.851450 2018] [:emerg] [pid 9332] AH02818: MPM run failed, exiting
[Wed Aug 29 12:39:19.905390 2018] [core:warn] [pid 9605] AH00098: pid file /var/run/apache2/apache2.pid overwritten -- Unclean shutdown of previous Apache run?
[Wed Aug 29 12:39:19.924748 2018] [mpm_prefork:notice] [pid 9605] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0h configured -- resuming normal operations
[Wed Aug 29 12:39:19.924789 2018] [core:notice] [pid 9605] AH00094: Command line: '/usr/sbin/apache2'