Error: syntax error near <\1>

Error Example

[script:filo_vehiclekeys] Error parsing script @filo_vehiclekeys/server/sv-main.lua in resource filo_vehiclekeys: @filo_vehiclekeys/server/sv-main.lua:1: syntax error near '<\1>'
[    c-scripting-core] Failed to load script server/sv-main.lua.

Solutions

• You are using FileZilla and files have been corrupted during transfer - try using an alternative FTP client such as WinSCP
• You are transferring the folder to your server file by file — you must upload the .zip file as-is and then extract it after it has been transferred to your VPS
• Your server version is too old, the minimum version is 4752
  • You can download updated server artifacts here
  • ...or check out the official FiveM guide