Thank you very much @andi and @turnermm for the responses,
I tried them and I get these new errors, I understood that one of them is about Bar charts plugin, but for the other errors, I don't have a clue on what to do.
Please help me again 🙁
[10-Aug-2021 12:36:07 Europe/Brussels] PHP Warning: Declaration of syntax_plugin_avbarchart::render($mode, &$renderer, $data) should be compatible with DokuWiki_Syntax_Plugin::render($format, Doku_Renderer $renderer, $data) in /home/web1349/public_html/dokuwiki/lib/plugins/avbarchart/syntax.php on line 125
[10-Aug-2021 12:36:07 Europe/Brussels] PHP Warning: Declaration of syntax_plugin_nbsp::handle($aMatch, $aState, $aPos, &$aHandler) should be compatible with DokuWiki_Syntax_Plugin::handle($match, $state, $pos, Doku_Handler $handler) in /home/web1349/public_html/dokuwiki/lib/plugins/nbsp/syntax.php on line 144
[10-Aug-2021 12:36:07 Europe/Brussels] PHP Warning: Declaration of syntax_plugin_nbsp::render($aFormat, &$aRenderer, $aData) should be compatible with DokuWiki_Syntax_Plugin::render($format, Doku_Renderer $renderer, $data) in /home/web1349/public_html/dokuwiki/lib/plugins/nbsp/syntax.php on line 170
[10-Aug-2021 12:36:08 Europe/Brussels] PHP Warning: "continue" targeting switch is equivalent to "break". Did you mean to use "continue 2"? in /home/web1349/public_html/dokuwiki/inc/parser/handler.php on line 1552
[10-Aug-2021 12:36:08 Europe/Brussels] PHP Warning: Declaration of syntax_plugin_hr::handle($aMatch, $aState, $aPos, &$aHandler) should be compatible with DokuWiki_Syntax_Plugin::handle($match, $state, $pos, Doku_Handler $handler) in /home/web1349/public_html/dokuwiki/lib/plugins/hr/syntax.php on line 181
[10-Aug-2021 12:36:08 Europe/Brussels] PHP Warning: Declaration of syntax_plugin_hr::render($aFormat, &$aRenderer, &$aData) should be compatible with DokuWiki_Syntax_Plugin::render($format, Doku_Renderer $renderer, $data) in /home/web1349/public_html/dokuwiki/lib/plugins/hr/syntax.php on line 204
[10-Aug-2021 12:36:08 Europe/Brussels] PHP Warning: Declaration of syntax_plugin_avbarchart::handle($match, $state, $pos, &$handler) should be compatible with DokuWiki_Syntax_Plugin::handle($match, $state, $pos, Doku_Handler $handler) in /home/web1349/public_html/dokuwiki/lib/plugins/avbarchart/syntax.php on line 78
[10-Aug-2021 12:36:08 Europe/Brussels] PHP Warning: Declaration of syntax_plugin_avbarchart::render($mode, &$renderer, $data) should be compatible with DokuWiki_Syntax_Plugin::render($format, Doku_Renderer $renderer, $data) in