bugfix

[ClubEdNZ]

Sorry I can't tell you how to reliably replicate it, because I had an intermittent issue, & only sometimes when I did something wrong in my level designer, but adding a check at the end of fetch_path fixed it:

the final return in fetch path I altered to check that the from_id was found at all:
return pathfinder_cache[from_id] and pathfinder_cache[from_id][to_id]

[thanks for defgraph, btw, I love it!]

[dev-masih]

Thank you for using DefGraph! I warmly welcome you to submit a pull request regarding this issue. After all, there's no harm in verifying whether the value exists