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Output for 8.4.1 - 8.4.6
Fatal error: Uncaught TypeError: Unsupported operand types: BcMath\Number + GMP in /in/gksqI:6 Stack trace: #0 {main} thrown in /in/gksqI on line 6
Process exited with code 255.
Output for 8.1.30 - 8.1.32, 8.2.22 - 8.2.28, 8.3.5 - 8.3.19
Fatal error: Uncaught Error: Class "BCMath\Number" not found in /in/gksqI:3 Stack trace: #0 {main} thrown in /in/gksqI on line 3
Process exited with code 255.

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