Can it be fixed in htaccess
Do not put comments at the end of a line with a directive. From the documentation (emphasis not mine):
Lines that begin with the hash character "#" are considered comments, and are ignored. Comments may not be included on the same line as a configuration directive.
Basically, put the comment on a line of its own (if you want to keep it) or remove it entirely.
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.