Before:

2025-04-14 08:32:18.364 LSP Kepler: call failed: runtime error: [string "/var/www/html/admin/scripts/lua/header.lp"]:29: attempt to index a nil value (field 'query_string')
2025-04-14 08:32:18.365 LSP Kepler: call failed: runtime error: aborting
2025-04-14 08:32:18.365 LSP Kepler: call failed: runtime error: aborting

More fixes are in my https://github.com/XhmikosR/web/commits/xmr/reduce-jquery/ branch, but I will be able to upstream them after we are done with #3388.

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