On some case, it is simply "text/html".
Now it causes it to crash, when I try to reload the page, but I'm getting closer.
Exception (28):
epc1=0x40203d4d epc2=0x00000000 epc3=0x00000000 excvaddr=0x00000028 depc=0x00000000
ctx: cont
sp: 3ffeca20 end: 3ffecc60 offset: 01a0
>>>stack>>>
3ffecbc0: 0000000c 3fff7368 00000003 00000003
3ffecbd0: 3fff6f30 00000019 00000019 4020464d
3ffecbe0: 3ffea648 00000000 000003e8 402043d6
3ffecbf0: 00000000 3fff7590 3ffeb0c8 3ffecc8c
3ffecc00: 3fffdc20 000003e9 3ffeb0c8 402054f9
3ffecc10: 3ffea648 00000000 000003e8 00013151
3ffecc20: 3ffeb0e0 3fff7590 00000016 40101e4d
3ffecc30: 402017ed 00000000 3ffecc84 40202b88
3ffecc40: 3fffdc20 00000000 3ffecc84 4020184a
3ffecc50: 00000000 00000000 3ffebc40 40100378
<<<stack<<<
ets Jan 8 2013,rst cause:1, boot mode:(1,7)
ets Jan 8 2013,rst cause:4, boot mode:(1,7)
wdt reset