Http 500 error on OJS

Hello,

Our ojs " ojs.sjesr.org.pk/ "is working fine when you access it but when we try to login it give an error

This page isn’t working

is currently unable to handle this request.

HTTP ERROR 500

I tried every possible option but fail to resolve the issue.

You should enable the display_error to on on the ojs config.inc.php to show the error or analyze the error by reading the webserver error log.

Parse error : syntax error, unexpected ‘?’ in /home/sjesrorg/public_html/ojs/lib/pkp/lib/vendor/illuminate/support/Str.php on line 681

Complete code…

<?php namespace Illuminate\Support; use Illuminate\Support\Traits\Macroable; class Str { use Macroable; /** * The cache of snake-cased words. * * @var array */ protected static $snakeCache = []; /** * The cache of camel-cased words. * * @var array */ protected static $camelCache = []; /** * The cache of studly-cased words. * * @var array */ protected static $studlyCache = []; /** * Return the remainder of a string after a given value. * * @param string $subject * @param string $search * @return string */ public static function after($subject, $search) { return $search === '' ? $subject : array_reverse(explode($search, $subject, 2))[0]; } /** * Transliterate a UTF-8 value to ASCII. * * @param string $value * @param string $language * @return string */ public static function ascii($value, $language = 'en') { $languageSpecific = static::languageSpecificCharsArray($language); if (! is_null($languageSpecific)) { $value = str_replace($languageSpecific[0], $languageSpecific[1], $value); } foreach (static::charsArray() as $key => $val) { $value = str_replace($val, $key, $value); } return preg_replace('/[^\x20-\x7E]/u', '', $value); } /** * Get the portion of a string before a given value. * * @param string $subject * @param string $search * @return string */ public static function before($subject, $search) { return $search === '' ? $subject : explode($search, $subject)[0]; } /** * Convert a value to camel case. * * @param string $value * @return string */ public static function camel($value) { if (isset(static::$camelCache[$value])) { return static::$camelCache[$value]; } return static::$camelCache[$value] = lcfirst(static::studly($value)); } /** * Determine if a given string contains a given substring. * * @param string $haystack * @param string|array $needles * @return bool */ public static function contains($haystack, $needles) { foreach ((array) $needles as $needle) { if ($needle !== '' && mb_strpos($haystack, $needle) !== false) { return true; } } return false; } /** * Determine if a given string ends with a given substring. * * @param string $haystack * @param string|array $needles * @return bool */ public static function endsWith($haystack, $needles) { foreach ((array) $needles as $needle) { if (substr($haystack, -strlen($needle)) === (string) $needle) { return true; } } return false; } /** * Cap a string with a single instance of a given value. * * @param string $value * @param string $cap * @return string */ public static function finish($value, $cap) { $quoted = preg_quote($cap, '/'); return preg_replace('/(?:'.$quoted.')+$/u', '', $value).$cap; } /** * Determine if a given string matches a given pattern. * * @param string|array $pattern * @param string $value * @return bool */ public static function is($pattern, $value) { $patterns = is_array($pattern) ? $pattern : (array) $pattern; if (empty($patterns)) { return false; } foreach ($patterns as $pattern) { // If the given value is an exact match we can of course return true right // from the beginning. Otherwise, we will translate asterisks and do an // actual pattern match against the two strings to see if they match. if ($pattern == $value) { return true; } $pattern = preg_quote($pattern, '#'); // Asterisks are translated into zero-or-more regular expression wildcards // to make it convenient to check if the strings starts with the given // pattern such as "library/*", making any string check convenient. $pattern = str_replace('\*', '.*', $pattern); if (preg_match('#^'.$pattern.'\z#u', $value) === 1) { return true; } } return false; } /** * Convert a string to kebab case. * * @param string $value * @return string */ public static function kebab($value) { return static::snake($value, '-'); } /** * Return the length of the given string. * * @param string $value * @param string $encoding * @return int */ public static function length($value, $encoding = null) { if ($encoding) { return mb_strlen($value, $encoding); } return mb_strlen($value); } /** * Limit the number of characters in a string. * * @param string $value * @param int $limit * @param string $end * @return string */ public static function limit($value, $limit = 100, $end = '...') { if (mb_strwidth($value, 'UTF-8') <= $limit) { return $value; } return rtrim(mb_strimwidth($value, 0, $limit, '', 'UTF-8')).$end; } /** * Convert the given string to lower-case. * * @param string $value * @return string */ public static function lower($value) { return mb_strtolower($value, 'UTF-8'); } /** * Limit the number of words in a string. * * @param string $value * @param int $words * @param string $end * @return string */ public static function words($value, $words = 100, $end = '...') { preg_match('/^\s*+(?:\S++\s*+){1,'.$words.'}/u', $value, $matches); if (! isset($matches[0]) || static::length($value) === static::length($matches[0])) { return $value; } return rtrim($matches[0]).$end; } /** * Parse a Class@method style callback into class and method. * * @param string $callback * @param string|null $default * @return array */ public static function parseCallback($callback, $default = null) { return static::contains($callback, '@') ? explode('@', $callback, 2) : [$callback, $default]; } /** * Get the plural form of an English word. * * @param string $value * @param int $count * @return string */ public static function plural($value, $count = 2) { return Pluralizer::plural($value, $count); } /** * Generate a more truly "random" alpha-numeric string. * * @param int $length * @return string */ public static function random($length = 16) { $string = ''; while (($len = strlen($string)) < $length) { $size = $length - $len; $bytes = random_bytes($size); $string .= substr(str_replace(['/', '+', '='], '', base64_encode($bytes)), 0, $size); } return $string; } /** * Replace a given value in the string sequentially with an array. * * @param string $search * @param array $replace * @param string $subject * @return string */ public static function replaceArray($search, array $replace, $subject) { foreach ($replace as $value) { $subject = static::replaceFirst($search, $value, $subject); } return $subject; } /** * Replace the first occurrence of a given value in the string. * * @param string $search * @param string $replace * @param string $subject * @return string */ public static function replaceFirst($search, $replace, $subject) { if ($search == '') { return $subject; } $position = strpos($subject, $search); if ($position !== false) { return substr_replace($subject, $replace, $position, strlen($search)); } return $subject; } /** * Replace the last occurrence of a given value in the string. * * @param string $search * @param string $replace * @param string $subject * @return string */ public static function replaceLast($search, $replace, $subject) { $position = strrpos($subject, $search); if ($position !== false) { return substr_replace($subject, $replace, $position, strlen($search)); } return $subject; } /** * Begin a string with a single instance of a given value. * * @param string $value * @param string $prefix * @return string */ public static function start($value, $prefix) { $quoted = preg_quote($prefix, '/'); return $prefix.preg_replace('/^(?:'.$quoted.')+/u', '', $value); } /** * Convert the given string to upper-case. * * @param string $value * @return string */ public static function upper($value) { return mb_strtoupper($value, 'UTF-8'); } /** * Convert the given string to title case. * * @param string $value * @return string */ public static function title($value) { return mb_convert_case($value, MB_CASE_TITLE, 'UTF-8'); } /** * Get the singular form of an English word. * * @param string $value * @return string */ public static function singular($value) { return Pluralizer::singular($value); } /** * Generate a URL friendly "slug" from a given string. * * @param string $title * @param string $separator * @param string $language * @return string */ public static function slug($title, $separator = '-', $language = 'en') { $title = static::ascii($title, $language); // Convert all dashes/underscores into separator $flip = $separator == '-' ? '_' : '-'; $title = preg_replace('!['.preg_quote($flip).']+!u', $separator, $title); // Replace @ with the word 'at' $title = str_replace('@', $separator.'at'.$separator, $title); // Remove all characters that are not the separator, letters, numbers, or whitespace. $title = preg_replace('![^'.preg_quote($separator).'\pL\pN\s]+!u', '', mb_strtolower($title)); // Replace all separator characters and whitespace by a single separator $title = preg_replace('!['.preg_quote($separator).'\s]+!u', $separator, $title); return trim($title, $separator); } /** * Convert a string to snake case. * * @param string $value * @param string $delimiter * @return string */ public static function snake($value, $delimiter = '_') { $key = $value; if (isset(static::$snakeCache[$key][$delimiter])) { return static::$snakeCache[$key][$delimiter]; } if (! ctype_lower($value)) { $value = preg_replace('/\s+/u', '', ucwords($value)); $value = static::lower(preg_replace('/(.)(?=[A-Z])/u', '$1'.$delimiter, $value)); } return static::$snakeCache[$key][$delimiter] = $value; } /** * Determine if a given string starts with a given substring. * * @param string $haystack * @param string|array $needles * @return bool */ public static function startsWith($haystack, $needles) { foreach ((array) $needles as $needle) { if ($needle !== '' && substr($haystack, 0, strlen($needle)) === (string) $needle) { return true; } } return false; } /** * Convert a value to studly caps case. * * @param string $value * @return string */ public static function studly($value) { $key = $value; if (isset(static::$studlyCache[$key])) { return static::$studlyCache[$key]; } $value = ucwords(str_replace(['-', '_'], ' ', $value)); return static::$studlyCache[$key] = str_replace(' ', '', $value); } /** * Returns the portion of string specified by the start and length parameters. * * @param string $string * @param int $start * @param int|null $length * @return string */ public static function substr($string, $start, $length = null) { return mb_substr($string, $start, $length, 'UTF-8'); } /** * Make a string's first character uppercase. * * @param string $string * @return string */ public static function ucfirst($string) { return static::upper(static::substr($string, 0, 1)).static::substr($string, 1); } /** * Returns the replacements for the ascii method. * * Note: Adapted from Stringy\Stringy. * * @see https://github.com/danielstjules/Stringy/blob/3.1.0/LICENSE.txt * * @return array */ protected static function charsArray() { static $charsArray; if (isset($charsArray)) { return $charsArray; } return $charsArray = [ '0' => ['°', '₀', '۰', '0'], '1' => ['¹', '₁', '۱', '1'], '2' => ['²', '₂', '۲', '2'], '3' => ['³', '₃', '۳', '3'], '4' => ['⁴', '₄', '۴', '٤', '4'], '5' => ['⁵', '₅', '۵', '٥', '5'], '6' => ['⁶', '₆', '۶', '٦', '6'], '7' => ['⁷', '₇', '۷', '7'], '8' => ['⁸', '₈', '۸', '8'], '9' => ['⁹', '₉', '۹', '9'], 'a' => ['à', 'á', 'ả', 'ã', 'ạ', 'ă', 'ắ', 'ằ', 'ẳ', 'ẵ', 'ặ', 'â', 'ấ', 'ầ', 'ẩ', 'ẫ', 'ậ', 'ā', 'ą', 'å', 'α', 'ά', 'ἀ', 'ἁ', 'ἂ', 'ἃ', 'ἄ', 'ἅ', 'ἆ', 'ἇ', 'ᾀ', 'ᾁ', 'ᾂ', 'ᾃ', 'ᾄ', 'ᾅ', 'ᾆ', 'ᾇ', 'ὰ', 'ά', 'ᾰ', 'ᾱ', 'ᾲ', 'ᾳ', 'ᾴ', 'ᾶ', 'ᾷ', 'а', 'أ', 'အ', 'ာ', 'ါ', 'ǻ', 'ǎ', 'ª', 'ა', 'अ', 'ا', 'a', 'ä'], 'b' => ['б', 'β', 'ب', 'ဗ', 'ბ', 'b'], 'c' => ['ç', 'ć', 'č', 'ĉ', 'ċ', 'c'], 'd' => ['ď', 'ð', 'đ', 'ƌ', 'ȡ', 'ɖ', 'ɗ', 'ᵭ', 'ᶁ', 'ᶑ', 'д', 'δ', 'د', 'ض', 'ဍ', 'ဒ', 'დ', 'd'], 'e' => ['é', 'è', 'ẻ', 'ẽ', 'ẹ', 'ê', 'ế', 'ề', 'ể', 'ễ', 'ệ', 'ë', 'ē', 'ę', 'ě', 'ĕ', 'ė', 'ε', 'έ', 'ἐ', 'ἑ', 'ἒ', 'ἓ', 'ἔ', 'ἕ', 'ὲ', 'έ', 'е', 'ё', 'э', 'є', 'ə', 'ဧ', 'ေ', 'ဲ', 'ე', 'ए', 'إ', 'ئ', 'e'], 'f' => ['ф', 'φ', 'ف', 'ƒ', 'ფ', 'f'], 'g' => ['ĝ', 'ğ', 'ġ', 'ģ', 'г', 'ґ', 'γ', 'ဂ', 'გ', 'گ', 'g'], 'h' => ['ĥ', 'ħ', 'η', 'ή', 'ح', 'ه', 'ဟ', 'ှ', 'ჰ', 'h'], 'i' => ['í', 'ì', 'ỉ', 'ĩ', 'ị', 'î', 'ï', 'ī', 'ĭ', 'į', 'ı', 'ι', 'ί', 'ϊ', 'ΐ', 'ἰ', 'ἱ', 'ἲ', 'ἳ', 'ἴ', 'ἵ', 'ἶ', 'ἷ', 'ὶ', 'ί', 'ῐ', 'ῑ', 'ῒ', 'ΐ', 'ῖ', 'ῗ', 'і', 'ї', 'и', 'ဣ', 'ိ', 'ီ', 'ည်', 'ǐ', 'ი', 'इ', 'ی', 'i'], 'j' => ['ĵ', 'ј', 'Ј', 'ჯ', 'ج', 'j'], 'k' => ['ķ', 'ĸ', 'к', 'κ', 'Ķ', 'ق', 'ك', 'က', 'კ', 'ქ', 'ک', 'k'], 'l' => ['ł', 'ľ', 'ĺ', 'ļ', 'ŀ', 'л', 'λ', 'ل', 'လ', 'ლ', 'l'], 'm' => ['м', 'μ', 'م', 'မ', 'მ', 'm'], 'n' => ['ñ', 'ń', 'ň', 'ņ', 'ʼn', 'ŋ', 'ν', 'н', 'ن', 'န', 'ნ', 'n'], 'o' => ['ó', 'ò', 'ỏ', 'õ', 'ọ', 'ô', 'ố', 'ồ', 'ổ', 'ỗ', 'ộ', 'ơ', 'ớ', 'ờ', 'ở', 'ỡ', 'ợ', 'ø', 'ō', 'ő', 'ŏ', 'ο', 'ὀ', 'ὁ', 'ὂ', 'ὃ', 'ὄ', 'ὅ', 'ὸ', 'ό', 'о', 'و', 'θ', 'ို', 'ǒ', 'ǿ', 'º', 'ო', 'ओ', 'o', 'ö'], 'p' => ['п', 'π', 'ပ', 'პ', 'پ', 'p'], 'q' => ['ყ', 'q'], 'r' => ['ŕ', 'ř', 'ŗ', 'р', 'ρ', 'ر', 'რ', 'r'], 's' => ['ś', 'š', 'ş', 'с', 'σ', 'ș', 'ς', 'س', 'ص', 'စ', 'ſ', 'ს', 's'], 't' => ['ť', 'ţ', 'т', 'τ', 'ț', 'ت', 'ط', 'ဋ', 'တ', 'ŧ', 'თ', 'ტ', 't'], 'u' => ['ú', 'ù', 'ủ', 'ũ', 'ụ', 'ư', 'ứ', 'ừ', 'ử', 'ữ', 'ự', 'û', 'ū', 'ů', 'ű', 'ŭ', 'ų', 'µ', 'у', 'ဉ', 'ု', 'ူ', 'ǔ', 'ǖ', 'ǘ', 'ǚ', 'ǜ', 'უ', 'उ', 'u', 'ў', 'ü'], 'v' => ['в', 'ვ', 'ϐ', 'v'], 'w' => ['ŵ', 'ω', 'ώ', 'ဝ', 'ွ', 'w'], 'x' => ['χ', 'ξ', 'x'], 'y' => ['ý', 'ỳ', 'ỷ', 'ỹ', 'ỵ', 'ÿ', 'ŷ', 'й', 'ы', 'υ', 'ϋ', 'ύ', 'ΰ', 'ي', 'ယ', 'y'], 'z' => ['ź', 'ž', 'ż', 'з', 'ζ', 'ز', 'ဇ', 'ზ', 'z'], 'aa' => ['ع', 'आ', 'آ'], 'ae' => ['æ', 'ǽ'], 'ai' => ['ऐ'], 'ch' => ['ч', 'ჩ', 'ჭ', 'چ'], 'dj' => ['ђ', 'đ'], 'dz' => ['џ', 'ძ'], 'ei' => ['ऍ'], 'gh' => ['غ', 'ღ'], 'ii' => ['ई'], 'ij' => ['ij'], 'kh' => ['х', 'خ', 'ხ'], 'lj' => ['љ'], 'nj' => ['њ'], 'oe' => ['ö', 'œ', 'ؤ'], 'oi' => ['ऑ'], 'oii' => ['ऒ'], 'ps' => ['ψ'], 'sh' => ['ш', 'შ', 'ش'], 'shch' => ['щ'], 'ss' => ['ß'], 'sx' => ['ŝ'], 'th' => ['þ', 'ϑ', 'ث', 'ذ', 'ظ'], 'ts' => ['ц', 'ც', 'წ'], 'ue' => ['ü'], 'uu' => ['ऊ'], 'ya' => ['я'], 'yu' => ['ю'], 'zh' => ['ж', 'ჟ', 'ژ'], '(c)' => ['©'], 'A' => ['Á', 'À', 'Ả', 'Ã', 'Ạ', 'Ă', 'Ắ', 'Ằ', 'Ẳ', 'Ẵ', 'Ặ', 'Â', 'Ấ', 'Ầ', 'Ẩ', 'Ẫ', 'Ậ', 'Å', 'Ā', 'Ą', 'Α', 'Ά', 'Ἀ', 'Ἁ', 'Ἂ', 'Ἃ', 'Ἄ', 'Ἅ', 'Ἆ', 'Ἇ', 'ᾈ', 'ᾉ', 'ᾊ', 'ᾋ', 'ᾌ', 'ᾍ', 'ᾎ', 'ᾏ', 'Ᾰ', 'Ᾱ', 'Ὰ', 'Ά', 'ᾼ', 'А', 'Ǻ', 'Ǎ', 'A', 'Ä'], 'B' => ['Б', 'Β', 'ब', 'B'], 'C' => ['Ç', 'Ć', 'Č', 'Ĉ', 'Ċ', 'C'], 'D' => ['Ď', 'Ð', 'Đ', 'Ɖ', 'Ɗ', 'Ƌ', 'ᴅ', 'ᴆ', 'Д', 'Δ', 'D'], 'E' => ['É', 'È', 'Ẻ', 'Ẽ', 'Ẹ', 'Ê', 'Ế', 'Ề', 'Ể', 'Ễ', 'Ệ', 'Ë', 'Ē', 'Ę', 'Ě', 'Ĕ', 'Ė', 'Ε', 'Έ', 'Ἐ', 'Ἑ', 'Ἒ', 'Ἓ', 'Ἔ', 'Ἕ', 'Έ', 'Ὲ', 'Е', 'Ё', 'Э', 'Є', 'Ə', 'E'], 'F' => ['Ф', 'Φ', 'F'], 'G' => ['Ğ', 'Ġ', 'Ģ', 'Г', 'Ґ', 'Γ', 'G'], 'H' => ['Η', 'Ή', 'Ħ', 'H'], 'I' => ['Í', 'Ì', 'Ỉ', 'Ĩ', 'Ị', 'Î', 'Ï', 'Ī', 'Ĭ', 'Į', 'İ', 'Ι', 'Ί', 'Ϊ', 'Ἰ', 'Ἱ', 'Ἳ', 'Ἴ', 'Ἵ', 'Ἶ', 'Ἷ', 'Ῐ', 'Ῑ', 'Ὶ', 'Ί', 'И', 'І', 'Ї', 'Ǐ', 'ϒ', 'I'], 'J' => ['J'], 'K' => ['К', 'Κ', 'K'], 'L' => ['Ĺ', 'Ł', 'Л', 'Λ', 'Ļ', 'Ľ', 'Ŀ', 'ल', 'L'], 'M' => ['М', 'Μ', 'M'], 'N' => ['Ń', 'Ñ', 'Ň', 'Ņ', 'Ŋ', 'Н', 'Ν', 'N'], 'O' => ['Ó', 'Ò', 'Ỏ', 'Õ', 'Ọ', 'Ô', 'Ố', 'Ồ', 'Ổ', 'Ỗ', 'Ộ', 'Ơ', 'Ớ', 'Ờ', 'Ở', 'Ỡ', 'Ợ', 'Ø', 'Ō', 'Ő', 'Ŏ', 'Ο', 'Ό', 'Ὀ', 'Ὁ', 'Ὂ', 'Ὃ', 'Ὄ', 'Ὅ', 'Ὸ', 'Ό', 'О', 'Θ', 'Ө', 'Ǒ', 'Ǿ', 'O', 'Ö'], 'P' => ['П', 'Π', 'P'], 'Q' => ['Q'], 'R' => ['Ř', 'Ŕ', 'Р', 'Ρ', 'Ŗ', 'R'], 'S' => ['Ş', 'Ŝ', 'Ș', 'Š', 'Ś', 'С', 'Σ', 'S'], 'T' => ['Ť', 'Ţ', 'Ŧ', 'Ț', 'Т', 'Τ', 'T'], 'U' => ['Ú', 'Ù', 'Ủ', 'Ũ', 'Ụ', 'Ư', 'Ứ', 'Ừ', 'Ử', 'Ữ', 'Ự', 'Û', 'Ū', 'Ů', 'Ű', 'Ŭ', 'Ų', 'У', 'Ǔ', 'Ǖ', 'Ǘ', 'Ǚ', 'Ǜ', 'U', 'Ў', 'Ü'], 'V' => ['В', 'V'], 'W' => ['Ω', 'Ώ', 'Ŵ', 'W'], 'X' => ['Χ', 'Ξ', 'X'], 'Y' => ['Ý', 'Ỳ', 'Ỷ', 'Ỹ', 'Ỵ', 'Ÿ', 'Ῠ', 'Ῡ', 'Ὺ', 'Ύ', 'Ы', 'Й', 'Υ', 'Ϋ', 'Ŷ', 'Y'], 'Z' => ['Ź', 'Ž', 'Ż', 'З', 'Ζ', 'Z'], 'AE' => ['Æ', 'Ǽ'], 'Ch' => ['Ч'], 'Dj' => ['Ђ'], 'Dz' => ['Џ'], 'Gx' => ['Ĝ'], 'Hx' => ['Ĥ'], 'Ij' => ['IJ'], 'Jx' => ['Ĵ'], 'Kh' => ['Х'], 'Lj' => ['Љ'], 'Nj' => ['Њ'], 'Oe' => ['Œ'], 'Ps' => ['Ψ'], 'Sh' => ['Ш'], 'Shch' => ['Щ'], 'Ss' => ['ẞ'], 'Th' => ['Þ'], 'Ts' => ['Ц'], 'Ya' => ['Я'], 'Yu' => ['Ю'], 'Zh' => ['Ж'], ' ' => ["\xC2\xA0", "\xE2\x80\x80", "\xE2\x80\x81", "\xE2\x80\x82", "\xE2\x80\x83", "\xE2\x80\x84", "\xE2\x80\x85", "\xE2\x80\x86", "\xE2\x80\x87", "\xE2\x80\x88", "\xE2\x80\x89", "\xE2\x80\x8A", "\xE2\x80\xAF", "\xE2\x81\x9F", "\xE3\x80\x80", "\xEF\xBE\xA0"], ]; } /** * Returns the language specific replacements for the ascii method. * * Note: Adapted from Stringy\Stringy. * * @see https://github.com/danielstjules/Stringy/blob/3.1.0/LICENSE.txt * * @param string $language * @return array|null */ protected static function languageSpecificCharsArray($language) { static $languageSpecific; if (! isset($languageSpecific)) { $languageSpecific = [ 'bg' => [ ['х', 'Х', 'щ', 'Щ', 'ъ', 'Ъ', 'ь', 'Ь'], ['h', 'H', 'sht', 'SHT', 'a', 'А', 'y', 'Y'], ], 'de' => [ ['ä', 'ö', 'ü', 'Ä', 'Ö', 'Ü'], ['ae', 'oe', 'ue', 'AE', 'OE', 'UE'], ], ]; } return $languageSpecific[$language] ?? null; } }

Try change your php version to php 7.3