Plugin crashes server after upgrading to PHP 7.4

[stefan131]

After my host upgraded PHP to version 7.4 the server does start up with this plugin anymore.
I got the following exception:

08.05 12:56:07 [Server] INFO Loading MapImageEngine v1.1.3 08.05 12:56:07 [Server] CRITICAL ErrorException: "Array and string offset access syntax with curly braces is deprecated" (EXCEPTION) in "plugins/MapImageEngine.phar/src/FaigerSYS/MapImageEngine/MapImageEngine" at line 64 08.05 12:56:07 [Server] CRITICAL #0 pmsrc/vendor/pocketmine/classloader/src/BaseClassLoader(138): pocketmine\utils\Utils::errorExceptionHandler(integer 8192, string[69] Array and string offset access syntax with curly braces is deprecated, string[130] phar:///plugins/MapImageEngine.ph, integer 64, array[2]) 08.05 12:56:07 [Server] CRITICAL #1 pmsrc/vendor/pocketmine/classloader/src/BaseClassLoader(138): include() 08.05 12:56:07 [Server] CRITICAL #2 pmsrc/vendor/pocketmine/classloader/src/BaseClassLoader(124): BaseClassLoader->loadClass(string[39] FaigerSYS\MapImageEngine\MapImageEngine) 08.05 12:56:07 [Server] CRITICAL #3 (): BaseClassLoader->{closure}(string[39] FaigerSYS\MapImageEngine\MapImageEngine) 08.05 12:56:07 [Server] CRITICAL #4 (): spl_autoload_call(string[39] FaigerSYS\MapImageEngine\MapImageEngine) 08.05 12:56:07 [Server] CRITICAL #5 pmsrc/src/pocketmine/plugin/PluginManager(167): class_exists(string[39] FaigerSYS\MapImageEngine\MapImageEngine, boolean 1) 08.05 12:56:07 [Server] CRITICAL #6 pmsrc/src/pocketmine/plugin/PluginManager(346): pocketmine\plugin\PluginManager->loadPlugin(string[75] /plugins/MapImageEngine.phar, array[2]) 08.05 12:56:07 [Server] CRITICAL #7 pmsrc/src/pocketmine/Server(1529): pocketmine\plugin\PluginManager->loadPlugins(string[56] /plugins/) 08.05 12:56:07 [Server] CRITICAL #8 pmsrc/src/pocketmine/PocketMine(291): pocketmine\Server->__construct(object BaseClassLoader, object pocketmine\utils\MainLogger, string[48] /, string[56] /plugins/) 08.05 12:56:07 [Server] CRITICAL #9 pmsrc/src/pocketmine/PocketMine(321): pocketmine\server() 08.05 12:56:07 [Server] CRITICAL #10 pmsrc(11): require(string[103] phar:///PocketMine-MP.phar/src/po) 08.05 12:56:07 [Server] EMERGENCY An unrecoverable error has occurred and the server has crashed. Creating a crash dump