How to fix out -Unable to create Debug Bridge: Unable to start adb server: Unable to detect adb version, adb output: /home/dilip/Downloads/sdk/platform-tools/adb: 1: /home/dilip/Downloads/sdk/platform-tools/adb: Syntax error: ")" unexpected

I also go to platform tool path and hit adb kill-server and adb start-server command on the terminal still not able to connect device.
I also go through this link Unable to create Debug Bridge Unable to detect adb version. Syntax error: ")" Upgrading Platform-tools 23.0.1 to 23.1.0 Linux-32 bit causes Issue