Wordpress 4.9.1
LSP 1.6.5
[moddecompress+++] compressbuf in 0, inflate/deflate return -5
2017-12-01 10:13:13.088 [ERROR] [178.154.171.75:45388] [moddecompress+++] compressbuf in 0, inflate/deflate return -5
2017-12-01 11:00:10.815 [ERROR] [112.225.62.32:50873:HTTP2-1] [Module-Cache] createEntry failed.
2017-12-01 11:01:06.566 [ERROR] [112.225.62.32:50873:HTTP2-9] [Module-Cache] createEntry failed.
2017-12-01 17:26:30.781 [ERROR] [203.208.60.164:43119] [moddecompress+++] compressbuf in 0, inflate/deflate return -5
2017-12-01 17:26:30.781 [ERROR] [203.208.60.164:43119] [moddecompress+++] compressbuf in 0, inflate/deflate return -5
2017-12-01 17:30:36.452 [ERROR] [203.208.60.167:36915] [moddecompress+++] compressbuf in 0, inflate/deflate return -5
2017-12-01 17:30:36.452 [ERROR] [203.208.60.167:36915] [moddecompress+++] compressbuf in 0, inflate/deflate return -5
2017-12-01 17:50:20.127 [ERROR] [37.115.190.154:62170] [moddecompress+++] compressbuf in 0, inflate/deflate return -5
2017-12-01 17:50:20.128 [ERROR] [37.115.190.154:62170] [moddecompress+++] compressbuf in 0, inflate/deflate return -5
2017-12-01 17:50:21.101 [ERROR] [37.115.190.154:60781] [moddecompress+++] compressbuf in 0, inflate/deflate return -5
2017-12-01 17:50:21.101 [ERROR] [37.115.190.154:60781] [moddecompress+++] compressbuf in 0, inflate/deflate return -5
2017-12-01 17:50:22.439 [ERROR] [37.115.190.154:65194] [moddecompress+++] compressbuf in 0, inflate/deflate return -5
2017-12-01 17:50:22.439 [ERROR] [37.115.190.154:65194] [moddecompress+++] compressbuf in 0, inflate/deflate return -5
2017-12-01 18:01:26.487 [ERROR] [112.225.62.32:64228:HTTP2-1] [Module-Cache] createEntry failed.
2017-12-01 18:01:51.901 [ERROR] [112.225.62.32:64228:HTTP2-9] [Module-Cache] createEntry failed.
Can you disable Gzip compression, and check if you still get this error?