Gdtyjr

I'm trying to generate a svg image of a reaction mechanism. However I keep receiving the error:

! Undefined control sequence.
pgfsys@svg@newline ->Hnewline 

when running the command make4ht -u "Bromothymol_blue".tex where Bromothymol_blue is the name of the latex document. Here is the code:

documentclassarticle
thispagestyleempty
usepackagechemfig
usepackagemol2chemfig
usepackagetikz
usepackageamsmath
usepackageamsfonts
usepackageamssymb
usepackagemhchem
usepackagetex4ht
begindocument
 schemestart
 chemnametinychemfig-[:160]-[:100](-[:40]Br)(-[:220,,,,draw=none]mcfcringle1.3)-[:160](-[:100,,,1]OH)-[:220](-[:160](-[:100])-[:220])-[:280]-[:340](-[:40])-[:280]@C(-[:204]-[:274](-[:154,,,,draw=none]mcfcringle1.3)-[:214](-[:274](-[:214])-[:334])-[:154](-[:214,,,2]HO)-[:94](-[:154]Br)-[:34](-[:94])-[:334])-[:288]-[:240](-[:0,,,,draw=none]mcfcringle1.3)-[:300]--[:60]-[:120](-[:180])-[:72]S(=[:336]O)(=[:60]O)-[:144]O(-[:216])Yellow
 begintikzpicture[overlay,remember picture]
 draw[red](C) circle (0.1) +(120:0.1) ..controls +(120:0.5) and +(0:0.5).. +(155:2) node[left,align=right] Conjugation\stops\here;
 endtikzpicture
 arrow<=>[smallce+OH-][smallceH+,;ceH2O]
 chemnametinychemfig
 % 15
 -[:300]% 14
 (
 -[::60]% 16
 )
 -[::300]% 12
 -[::300]% 11
 (
 -[::300]mcfrightO^mcfminus% 17
 )
 -[::60]% 10
 (
 -[::300]Br% 18
 )
 -[::60]% 9
 (
 -[::300]% 19
 )
 -[::60]% 8
 (
 -[::60]% 13
 -[::60]% -> 12
 )
 (
 -[::120,,,,draw=none]mcfcringle1.3% (o)
 )
 -[::300]% 7
 (
 -[::70]% 20
 -[::320]% 21
 (
 -[::310]S% 26
 (
 -[::110]mcfrightO^mcfminus% 28
 )
 (
 =[::50]O% 29
 )
 =[::350]O% 27
 )
 (
 -[::120,,,,draw=none]mcfcringle1.3% (o)
 )
 -[::60]% 22
 -[::60]% 23
 -[::60]% 24
 -[::60]% 25
 -[::60]% -> 20
 )
 =[::300]% 6
 -[::60]% 1
 (
 -[::60]% 35
 )
 -[::300,,,,drh]% 2
 (
 -[::60]Br% 34
 )
 -[::300]% 3
 (
 =[::60]O% 33
 )
 -[::300]% 4
 (
 -[::300,,,,drh]% 5
 -[::300]% -> 6
 )
 -[::60]% 30
 (
 -[::300]% 31
 )
 -[::60]% 32
 Blue
 schemestop
enddocument

I tried to follow the solution from Latex to HTML conversion (basic explanation). I use TeXstudio and used the user command make4ht -u %.tex

Please note that I know the code works with pdftlatex and that is not what I am trying to do. I am trying to generate a html output with an svg using tex4ht. Also I am quite new to this so please try and explain as much as possible in your answer.
Thanks!