Hello, it looks like FirePHP doesn't play nice with the recently released PHP 7.4:
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1603
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1824
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1825
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1826
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1831
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1832
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1833
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1834
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1885
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1908
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1913
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1919
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1929
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1930
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1940
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1941
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1942
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1952
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1953
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1954
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1955
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1965
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1966
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1967
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1968
PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in firephp/firephp-core/lib/FirePHPCore/FirePHP.class.php on line 1969
Hello, it looks like FirePHP doesn't play nice with the recently released PHP 7.4: