(can't activate mysql2 (~> 0.3.10), already activated mysql2-0.5.4. Make sure all dependencies are added to Gemfile.)

Ubuntu 20.04 Rails 3.2.22.5 Ruby 2.3.7 mysql2 8.0.29

• Above are the versions that currently i'm using for my project(app).
• In Gemfile mysql2 version is 0.3.18 but this version throwing me errors and not allowing me to run complete bundle.
• But, when i'm trying to run bundle with different version of mysql2 gem like 0.5.4, bundle successfully running but after that when i try to create db(database) or to start server this above error mentioned in question appears.

Anyone please help me out in this regard if you guys have any idea about that. Thanks in advance