These stand out, right before the first error.
I looked on vanilla files, and there is no grouptoolst1repair. So, first off.. if that's part of a mod, you need to make sure that mod is loaded before whatever mod you're doing, as that lootgroup is not defined before it's called in your mod.
Second, i do not believe that's a proper path on the first part:
<append xpath="/lootcontainers/lootgroup[@name='groupToolsT1Repair']" loot_quality_template="QLTemplateT1"
if you're trying to set the loot_quality, you gotta change that path. if it's just a typo or something, it could be interfering with some code.
It's been a while since i modded, but you would need to use the set attribute xpath to add the loot_qual stuff.
<setattribute xpath = "/lootcontainers/lootgroup[@name='groupToolsT1Repair']/loot_quality_template">QLTemplateT1</setattribute>
something like that. again, i haven't modded in quite some time and i do not have an example on hand of the setattribute, but that's what you'd use. might have to research the actual code needed for the setattribute.
Third thing is the actual error that pops up is telling you the "groupToolsT1Repair" group is not defined before being called. So, hopefully the first thing I said will fix it, minus the possible xpath error in number 2.