Apparently, the problem is related to a Bamboo model : https://pastebin.com/R6g4Rui2
The issue doesn't seem to have been put into your attention, so here it is.

And if you upgrade dynamictreesbop to 1.4.1e? This issue title plainly states that it crashes with the latest version yet your crash log indicates the version is out of date. Check your mods.

Edit: Make sure you update your thaumcraft add-on as well as it's also out of date.

OK, thank you, I'm really stupid : I genuinely thought I had the newer versions of the add-ons but it is now fixed.