On the converter, we can see:
2021-02-01 21:26:43,509 ERROR [Thread-4] c.a.a.m.s.d.c.TemporaryFileService [TemporaryFileService.java:86] Could not handle matching file : /arender/modules/document-converter/../../tmp/document-1m4g3S4mpl3_RENDERED.tmp
Not sure if it is a real ERROR? it misses some information about the why, or the log level should be reduced to WARN.