PHP warning in file "imagecache.php" in line 16:
Undefined array key "extension"

PHP error in file "imagecache.php" in line 16:
strtolower(): Passing null to parameter #1 ($string) of type string is deprecated

PHP warning in file "imagecache.php" in line 16:
Undefined array key "extension"

PHP error in file "imagecache.php" in line 16:
strtolower(): Passing null to parameter #1 ($string) of type string is deprecated

PHP warning in file "imagecache.php" in line 18:
Undefined array key "extension"

PHP error in file "imagecache.php" in line 18:
strtolower(): Passing null to parameter #1 ($string) of type string is deprecated

PHP warning in file "imagecache.php" in line 18:
Undefined array key "extension"

PHP error in file "imagecache.php" in line 18:
strtolower(): Passing null to parameter #1 ($string) of type string is deprecated