Added a short troubleshooting section to the installation docs

docs/Installation.md

@@ -111,6 +111,14 @@ DISABLE_WARNING_AS_ERROR=1 make -j 16 shared_lib
 sudo make install-shared
 ```
 
+#### Troubleshooting
+An error like the following means that your gcc compiler doesnt recognise your processor.
+```
+cc1plus: error: bad value (‘tigerlake’) for ‘-mtune=’ switch
+cc1plus: note: valid arguments to ‘-mtune=’ switch are: nocona core2 nehalem corei7 westmere sandybridge corei7-avx ivybridge core-avx-i haswell core-avx2 broadwell skylake skylake-avx512 cannonlake icelake-client icelake-server cascadelake bonnell atom silvermont slm goldmont goldmont-plus tremont knl knm intel x86-64 eden-x2 nano nano-1000 nano-2000 nano-3000 nano-x2 eden-x4 nano-x4 k8 k8-sse3 opteron opteron-sse3 athlon64 athlon64-sse3 athlon-fx amdfam10 barcelona bdver1 bdver2 bdver3 bdver4 znver1 znver2 btver1 btver2 generic native
+```
+If you get it ensure that you're using an up-to-date version of gcc and g++.
+
 ## Install Arbitrum
 
 With the dependencies installed, you can now install Arbitrum locally with